Weapons, armor and some other items can sometimes be crafted using materials that possess innate special properties. If you make a suit of armor or weapon out of more than one special material, you get the benefit of only the most prevalent material. However, you can build a double weapon with each head made of a different special material.
Each of the special materials described below has a definite game effect. Some creatures have damage reduction making them resistant to all but a special type of damage, such as that dealt by evil-aligned weapons or bludgeoning weapons. Others are vulnerable to weapons of a particular material. Characters may choose to carry several different types of weapons, depending upon the types of creatures they most commonly encounter.
Mined from rocks that fell from the heavens, this ultrahard metal adds to the quality of a weapon or suit of armor.
Weapons Weapons fashioned from adamantine have a natural ability to bypass hardness when sundering weapons or attacking objects, ignoring hardness less than 20.
The preserved skin of an angel retains a portion of celestial grace and can be crafted into leather, hide, or studded leather armor. Angelskin radiates a moderate good aura that masks malign auras. Any evil aura radiated by the wearer is reduced in strength by 10 Hit Dice. Auras reduced below 1 Hit Die can't be detected by means such as detect evil; the creature doesn't detect as evil, though this has no effect on other aspects of the creature's alignment. For example, a weak chaotic creature wearing angelskin armor detects as chaotic, but not evil.
Spells and supernatural abilities that have special effects when cast on or used against creatures with evil alignments (even beneficial effects) have a 20% chance of treating an evil wearer as neutral instead. Ongoing effects such as smite evil make this roll the first time they are used against the creature; if the effect treats the target as neutral, it does so for the remainder of the effect's duration. If the ongoing effect applies to an area and the wearer leaves that area, the percentage chance should be rolled again. Permanent magic items such as holy weapons always treat the wearer as evil. Armor constructed from angelskin is always of masterwork quality; the masterwork cost is included in the prices given below.
Angelskin has 5 hit points per inch of thickness and hardness 5.
Mysterious radiation deep below the surface of the earth warps once-ordinary quartz into bloodcraving stone. If an attack with a piercing or slashing blood crystal weapon hits a target suffering from a bleed effect, the creature takes 1 additional point of damage from the attack as the blood crystal drains blood from the wound. This applies even if the creature was taking bleed damage before the attack with the blood crystal weapon. This does not increase the amount of the bleed effect.
Unfed blood crystal has a pale pink hue, darkening toward deep crimson as it becomes saturated with blood. Piercing or slashing weapons composed entirely or partially of metal can be made from blood crystal. Unworked blood crystal has a value of 500 gp per pound. Weapons made with blood crystal have one-half the normal hit points. Armor and shields cannot be made of blood crystal, as they would feed on the wearer's own wounds.
Blood crystal has 10 hit points per inch of thickness and hardness 10.
Bone can be used in place of wood and steel in weapons and armor. Other animal-based materials like horn, shell, and ivory also use the rules for bone weapon and armor. The cost of a bone weapon or bone armor is half the price of a normal weapon or armor of its type.
Weapons Light and one-handed melee weapons, as well as two-handed weapons that deal bludgeoning damage only, can be crafted from bone. Hafted two-handed weapons such as spears can be crafted with bone tips, as can arrowheads. Other two-handed weapons cannot be constructed of bone. Bone weapons have half the hardness of their base weapons and have the fragile weapon quality. Masterwork bone weapons also have the fragile quality, but magic bone weapons do not. Bone weapons take a –2 penalty on damage rolls (minimum 1 damage).
Before the advent of iron and steel, bronze ruled the world. This easily worked metal can be used in place of steel for both weapons and armor.
For simplicity's sake, similar or component metals such as brass, copper, or even tin can use the following rules, even though in reality bronze is both harder and more reliable than those metals.
Weapons Light and one-handed weapons can be crafted from bronze. Likewise, spear points, arrowheads, and axe heads can be crafted from bronze, even those that are parts of two-handed weapons. Bronze is too weak to be used for two-handed weapons made entirely out of metal, and cannot typically be used to craft polearms, with the exception of the rhomphaia, which is provided in the section on Bronze Age equipment. Bronze weapons have the hardness of their base weapons but also have the fragile quality. Bronze weapons do the same damage as steel weapons of the same type, and have the same cost and weight.
This iron, mined deep underground and known for its effectiveness against demons and fey creatures, is forged at a lower temperature to preserve its delicate properties. Weapons made of cold iron cost twice as much to make as their normal counterparts. Also, adding any magical enhancements to a cold iron weapon increases its price by 2,000 gp. This increase is applied the first time the item is enhanced, not once per ability added.
Items without metal parts cannot be made from cold iron. An arrow could be made of cold iron, but a quarterstaff could not. A double weapon with one cold iron half costs 50% more than normal.
Cold iron has 30 hit points per inch of thickness and hardness 10.
Source: Advanced Race Guide
Darkleaf cloth is a special form of flexible material made by weaving together leaves and thin strips of bark from darkwood trees, then treating the resulting fabric with special alchemical processes. The resulting material is tough as cured hide but much lighter, making it an excellent material from which to create armor. Spell failure chances for armors made from darkleaf cloth decrease by 10% (to a minimum of 5%), maximum Dexterity bonuses increase by 2, and armor check penalties decrease by 3 (to a minimum of 0).
An item made from darkleaf cloth weighs half as much as the same item made from normal cured leather, furs, or hides. Items not primarily constructed of leather, fur, or hide are not meaningfully affected by being partially made of darkleaf cloth. As such padded, leather, studded leather, and hide armor can be made out of darkleaf cloth (although other types of armor made of leather or hide might be possible). Because darkleaf cloth remains flexible, it cannot be used to construct rigid items such as shields or metal armors. Armors fashioned from darkleaf cloth are always masterwork items as well; the masterwork cost is included in the prices given below.
This rare magic wood is as hard as normal wood but very light.
Any wooden or mostly wooden item (such as a bow or spear) made from darkwood is considered a masterwork item and weighs only half as much as a normal wooden item of that type. Items not normally made of wood or only partially of wood (such as a battleaxe or a mace) either cannot be made from darkwood or do not gain any special benefit from being made of darkwood. The armor check penalty of a darkwood shield is lessened by 2 compared to an ordinary shield of its type.
Armorsmiths can work with the hides of dragons to produce armor or shields of masterwork quality.
One dragon produces enough hide for a single suit of masterwork hide armor for a creature one size category smaller than the dragon. By selecting only choice scales and bits of hide, an armorsmith can produce one suit of masterwork banded mail for a creature two sizes smaller, one suit of masterwork half-plate for a creature three sizes smaller, or one masterwork breastplate or suit of full plate for a creature four sizes smaller. In each case, enough hide is available to produce a light or heavy masterwork shield in addition to the armor, provided that the dragon is Large or larger. If the dragonhide comes from a dragon that had immunity to an energy type, the armor is also immune to that energy type, although this does not confer any protection to the wearer.
Because dragonhide armor isn't made of metal, druids can wear it without penalty.
HP/inch 10 (hide of a dragon is typically between 1/2 inch and 1 inch thick).
This supple material offers as much protection as leather, but is more flexible and resistant to electricity. Leather, hide, or studded leather armor can be produced with eel hide. The armor check penalty of such armor is reduced by 1 (to a minimum of 0) and the maximum Dexterity bonus of the armor is increased by 1. Additionally, wearing eel hide grants the wearer electricity resistance 2. Armor crafted from eel hide is always considered masterwork, and the masterwork costs are included in the listed prices.
Eel hide has the same hit points and hardness as leather.
First crafted in the deeps of time by the titans and bestowed as gifts to monster-slaying heroes among the lesser races, Elysian bronze retains the brazen coloration of its namesake but is as hard as steel. A weapon made of Elysian bronze adds a +1 bonus on weapon damage rolls against magical beasts and monstrous humanoids; this damage is multiplied on a critical hit. After a creature uses an Elysian bronze weapon to deal damage to a magical beast or monstrous humanoid, the wielder gains a +1 bonus on attack rolls against that specific creature type (for example, against chimeras, not all magical beasts) for the next 24 hours, or until the weapon deals damage to a different kind of magical beast or monstrous humanoid.
Armor made of Elysian bronze also protects its wearer against the natural weapons or unarmed strikes of magical beasts and monstrous humanoids, providing damage reduction as if it were adamantine (1/— for light armor, 2/— for medium armor, or 3/— for heavy armor). It does not provide this protection against creatures of other types.
Elysian bronze has the same hit points and hardness as steel.
Dwarves stumbled across the secret of crafting fire-forged steel in an effort to make forge-friendly tools. It didn't take them long to adapt its unique properties to arms and armor. Fire-forged steel channels heat in one direction to protect its wearer or wielder. When it is crafted into armor, heat is channeled away from the wearer, offering some limited protection. Armor crafted from fire-forged steel grants the wearer fire resistance 2.
Weapons crafted from fire-forged steel similarly channel heat away from the wearer; this does not grant the wielder energy resistance. Instead, the blade absorbs and channels heat to the parts of the weapon that contact enemies. If the weapon is exposed to 10 points or more of fire damage (such as from an opponent's fireball or by holding it in a campfire for 1 full round), the weapon adds +1d4 points of fire damage to its attacks for the next 2 rounds. If the wielder is wearing fire-forged armor and using a fire-forged weapon, this bonus damage increases to 1d6 points of fire damage and lasts for 4 rounds. This bonus damage does not stack with fire damage from weapon enhancements such as flaming.
Armor or weapons made from fire-forged steel are always considered masterwork, and the masterwork costs are included in the listed prices.
Fire-forged steel has the same hit points and hardness as steel.
This material is the same substance as fire-forged steel with a subtle difference in the alignment of the metal during crafting. Instead of channeling heat away from the wearer, it channels heat toward the wearer. Frost-forged steel works similarly to fire-forged steel, except its effects apply to cold damage rather than fire damage. This means frost-forged steel weapons are less useful than their fire-forged counterparts, as there are few nonmagical sources of cold that can quickly imbue it with enough cold energy to deal bonus damage.
Armor and weapons made from frost-forged steel are always considered masterwork, and the masterwork costs are included in the listed prices.
Frost-forged steel has the same hit points and hardness as steel. Frost-forged steel costs the same as fire-forged steel.
Typically only used for ceremonial weapons and armor, metal equipment made from gold is fragile, heavy, and expensive. Often golden armor is gold-plated rather than constructed entirely from gold.
The rules below are for the rare item constructed entirely of gold rather than being gold-plated. Gold-plated items triple the base cost of weapons and armor and have the same properties as the item the gold is plating. Items constructed purely of gold cost 10 times the normal cost for items of their type. Gold items weigh 50% more than typical weapons or armor of their type.
Weapons Gold is often too soft to hold a decent edge, but light weapons that do piercing or slashing damage can be constructed of gold or some nearly gold alloy. They take a –2 penalty on damage rolls (minimum 1 damage). Gold weapons have a hardness of half their base weapons' and also have the fragile quality.
The secret of greenwood lies in its harvesting. Each length is taken, with leaves still attached, from a tree animated by a treant and cut with care to avoid the death of the tree. A dryad then speaks to and shapes the wood, coaxing the living green of the leaves into the grain of the wood itself. The resulting wood remains alive as long as it is doused with at least one gallon of water (plus 1 gallon for every 10 pounds of the item's weight) once per week and allowed to rest for an hour in contact with fertile soil. Any wooden or mostly wooden item (such as a bow or spear) made from greenwood is considered a masterwork item. Items not normally made of wood or only partially of wood (such as a battleaxe or a mace) either cannot be made from greenwood or do not gain any special benefit from being made of greenwood.
When damp and in contact with fertile soil, living greenwood heals damage to itself at a rate of 1 hit point per hour, even repairing breaks and regrowing missing pieces. If the weapon has the broken condition, it is repaired during the first hour of contact with fertile soil. Greenwood items take only one-quarter damage from fire.
Greenwood can be altered or enhanced with wood-shaping magic such as ironwood, shape wood, and warp wood. The duration of any such effect on a greenwood item is doubled.
To determine the price of a greenwood item, use the original weight but add 50 gp per pound to the price of a masterwork version of that item. Items made from darkwood cannot be made into greenwood.
Greenwood has the same hit points and hardness as wood.
This rough-spun cloth, ranging in color from golden-brown to brown-black, is woven from the mane of leonine magical beasts, primarily griffons but also chimeras and manticores, and is exceptionally strong and light. Wearing a cloak, robe, clothing outfit, or padded or quilted armor made from griffon mane grants a +2 competence bonus on Fly checks. If an item made of griffon mane is magically given the ability to fly, the cost to add that specific magical property is reduced by 10%, though this does not reduce the cost of any other abilities the item has.
Griffon mane has twice the number of hit points of normal cloth and hardness 1.
This iron, mined deep underground and known for its effectiveness against demons and fey creatures, is forged at a lower temperature to preserve its delicate properties.
Items without metal parts cannot be made from cold iron. An arrow could be made of cold iron, but a quarterstaff could not.
Some trees suck up potent minerals through their roots the same way others draw water from the ground. Though these trees blunt saws and axes used to hew them and shrug off fire, they eventually succumb to time or the elements. When properly harvested, these fallen trees produce nuggets of a metal called living steel. This glossy green metal slowly repairs itself. An item made from living steel repairs damage to itself at a rate of 2 hit points per day, or 1 hit point per day if it has the broken condition. Items not primarily of metal are not meaningfully affected by being partially made of living steel.
Armor and shields made from living steel can damage metal weapons that strike them. Whenever the wielder of a metal weapon rolls a natural 1 on an attack roll against a creature wearing living steel armor or wielding a living steel shield, the item must make a DC 20 Fortitude save or gain the broken condition. If the weapon already has the broken condition, it is instead destroyed. Living steel cannot damage adamantine weapons in this way.
Living steel has 35 hit points per inch of thickness and hardness 15.
Mithral is a very rare silvery, glistening metal that is lighter than steel but just as hard.
When worked like steel, it becomes a wonderful material from which to create armor, and is occasionally used for other items as well. Most mithral armors are one category lighter than normal for purposes of movement and other limitations. Heavy armors are treated as medium, and medium armors are treated as light, but light armors are still treated as light. This decrease does not apply to proficiency in wearing the armor. A character wearing mithral full plate must be proficient in wearing heavy armor to avoid adding the armor's check penalty to all his attack rolls and skill checks that involve moving. Spell failure chances for armors and shields made from mithral are decreased by 10%, maximum Dexterity bonuses are increased by 2, and armor check penalties are decreased by 3 (to a minimum of 0).
Items not primarily of metal are not meaningfully affected by being partially made of mithral. (A longsword can be a mithral weapon, while a quarterstaff cannot.) Mithral weapons count as silver for the purpose of overcoming damage reduction.
This black volcanic glass is extremely sharp, and can be shaped into a variety of weapons that do piercing and slashing damage. Bits of obsidian inserted into a length of tempered wood create effective swords called terbutjes.
Weapons Obsidian can be used to craft light and one-handed weapons that do piercing or slashing damage, as well as spear tips and arrowheads. Obsidian weapons have half the hardness of their base weapon and have the fragile quality.
Source: Pathfinder Adventure Path #41
Serpentstone is a strange substance unique to the precursor alchemies of the ancient serpentfolk. Its ancient name is lost to time, but modern explorers have dubbed it “serpentstone” after its ophidian creators.
Exceptionally resilient, all serpentstone is magically treated stone. When properly worked and treated through eldritch means known only to ancient serpentfolk wizards and sorcerers, serpentstone can be programmed to emit sound and light in a variety of ways, shifting at predetermined times from color to color and tone to tone, from brightness equal to that of daylight to a dim, shadowy glimmer like that of a candle. In addition, serpentstone can be set to radiate heat or cold, or produce illusory smoke, roiling forth thin streams of scented, incense-like fumes designed to delight, enlighten, or otherwise inform serpentfolk in the vicinity. All of these effects function as major image (caster level 18th).
A complex process involving metallurgy and alchemy can bond silver to a weapon made of steel so that it bypasses the damage reduction of creatures such as lycanthropes.
On a successful attack with a silvered slashing or piercing weapon, the wielder takes a –1 penalty on the damage roll (with a minimum of 1 point of damage). The alchemical silvering process can't be applied to nonmetal items, and it doesn't work on rare metals such as adamantine, cold iron, and mithral.
Stone Age weapons almost always utilize stone in some way. From rocks lashed to wooden hafts to create early maces and axes, to flint knives and stone arrowheads, these primitive weapons are still deadly.
Weapons Light and one-handed bludgeoning weapons, spears, and arrowheads can all be made of stone. Weapons made of stone have half the hardness of their base weapons, and have the fragile condition. Editor's Note: Probably meant to say fragile "quality" not "condition."
This deep green volcanic glass is similar to obsidian but is formed when molten rock is tainted with anomalous trace minerals from deep beneath the earth whose emanations are toxic to living things. It can be fragmented to razor sharpness, but even a tiny amount of viridium contacting the bloodstream can pass on a wasting sickness.
Any successful hit with a viridium weapon causes the target to contract leprosy (Fortitude DC 12 negates). On a successful critical hit, a tiny fragment of viridium breaks off within the target, affecting it as though with greenblood oil (Fortitude DC 13 negates).
A creature carrying a viridium weapon must save every 24 hours or contract leprosy unless the weapon is kept inside an extradimensional space (such as an efficient quiver) or a scabbard lined with lead.
Oozes, plants, and outsiders are immune to the deadly emanations of viridium.
Viridium weapons have half the hardness of their base weapon and have the fragile quality. Viridium can be magically strengthened at an additional cost of +1,000 gp for a weapon or +20 gp for ammunition. This removes the fragile quality from the item but does not otherwise affect its abilities.
Source: Advanced Race Guide.
Vanara woodworkers craft this extremely flexible material in a time-consuming process. Whipwood is actually a composite of several bendable wooden fibers woven and fused together to form a flexible but sturdy unit. Only wooden weapons or weapons with wooden hafts (such as axes and spears) can be made out of whipwood.
A creature wielding a whipwood weapon treats its CMD as +2 higher for the purpose of avoiding sunder attempts against that weapon. A whipwood weapon's hit points increase by +5. Whipwood loses its special qualities if under the effect of an ironwood spell.
Source: Advanced Race Guide.
The root of the wyrwood tree has a peculiar quality. When a weapon constructed of wyroot confirms a critical hit, it absorbs some of the life force of the creature hit. The creature hit is unharmed and the wyroot weapon gains 1 life point. As a swift action, a wielder with a ki pool or an arcane pool can absorb 1 life point from the wyrwood weapon and convert it into either 1 ki point or 1 arcane pool point. Most wyroot weapons can only hold 1 life point at a time, but higher-quality wyroot does exist. The most powerful wyroot weapons can hold up to 3 life points at a time. Any unspent life points dissipate at dusk.
Wyroot can be used to construct any melee weapon made entirely of wood or a melee weapon with a wooden haft. Constructing a wyroot weapon that can hold 1 life point increases the weapon's cost by 1,000 gp, constructing one that can hold up to 2 life points increases the weapon's cost by 2,000 gp, and constructing one that can hold up to 3 life points increases the weapon's cost by 4,000 gp.
Source: Treasures of Freeport
Growing in underwater forests in shallow waters, black seaweed is a relatively common commodity in coastal areas. When wet, it is inky black with slightly lighter veins. When dried, it looks almost like tobacco only darker and much more fibrous. Black seaweed is often used as a rope substitute by aquatic races, especially in construction of nets, due to its strength and resistance to seawater.
Value 2 gp/lb.
Black seaweed must be kept moist at all times. The moment it is removed from salt water it begins to deteriorate and lose its strength. Removal from water for more than 8 hours begins to dry it out (hardness 0, 2 hp/in.) and causes it to lose its elasticity. Before this point the seaweed can be brought back to its normal state by submersion for one hour in salt water. Once 8 hours have past the deterioration is irreversible and after 24 hours out of water it is dry and brittle (hardness 0, 1 hp) and easily broken apart like any other dried plant. Storing black seaweed in any liquid other than seawater slows the process to one-fourth its normal time (32 hours to begin drying out, 96 hours to become brittle) but does not completely prevent it.
Source: Treasures of Freeport
Dried bone is as tough as wood and in many ways almost as versatile, being used for weapons as well as for the art of scrimshaw. Bone can be sharpened much like some stones can.
Value 1 sp/lb.
Source: Cerulean Seas © 2010 Alluria Publishing.
Items made from coral, chitin, or sea shells are refined and shaped through various alchemical processes. They are relatively cheap, but not particularly strong compared to objects constructed of metal. Items or objects constructed from these materials gain the broken condition after 7 days out of water and gain the destroyed condition after 7+(1d6) days out of water.
Coral or Clamshell, Hardened
Source Underdark Adventure Guide
Using precious stones to line the edge of bladed weapons, crystalline weapons are capable of slicing through the toughest of hides. A weapon edged in crystal ignores half of the armor bonus granted by armor (round up). Against magical armor, this applies only to the armor, but not the enhancement bonus of the armor. This also applies to shields. The weapon itself must be enchanted to at least the same level as the armor to enjoy this effect, otherwise it's treated as a normal weapon. Furthermore, if used to sunder a weapon or strike an inanimate object the weapon deals an additional +1d6 points of damage.
True crystalline weaponry is rare in the extreme. These weapons are made entirely from a precious crystal or gem and are fragile but very lethal weapons used only in the times of greatest need. A true crystalline blade is typically made of diamond. It ignores armor bonuses of armor, as well as deflection bonuses from magical items. Against magical armor, the weapon needs to have an enhancement bonus equal to or greater than that of the armor in order to have any special effect; otherwise, it is treated as a normal weapon.
These weapons are extremely fragile, despite their incredible hardness. A weapon that is true crystalline shatters on a natural attack roll of a 1; its hardness is 20 but it only has 5 hp. Only slashing and piercing weapons may be crystalline.
Value Cost x50 for common crystalline, cost x200 for true crystalline
Though largely unknown outside of arctic and sub-arctic regions, ice can be used to manufacture weapons and shields. The manufacturing process is very different than the normal process for constructing such items, instead relying on the Craft (ice carving) skill (but with the same DCs for creating weapons and shields). Ice weapons can only exist in areas where the temperature remains below the freezing point – if the temperature rises even one degree above freezing, ice weapons and shields begin to melt, losing 2 hp per minute until the item melts away. Ice weapons and shields can be made permanent, capable of surviving temperatures above freezing, by magic and with some alchemical concoctions. Unless so treated, ice weapons and shields suffer 50% more damage from heat and flame (such as a dragon's breath or a fireball spell).
Ice weapons are virtually ineffective against metal armor, dealing a maximum of 1 hp damage on strikes against foes clad in any type of metal armor. Ice weapons must also make a DC 15 Fortitude save every time they strike metal armor. Failing the save results in the ice weapon shattering. Though ice swords are manufactured, the nature of ice does not allow for a cutting edge, so any ice weapon that normally does slashing damage will do bludgeoning instead (though the amount of damage does not change). Piercing weapons can still pierce effectively. In addition to the normal damage, ice weapons deal an extra 1d3 points of cold damage with each blow and count as Cold weapons for purposes of overcoming damage resistance or for purposes of vulnerability.
Ice shields are very effective against non-metal weapons, performing as a light or heavy wooden shield. However, against metal weapons, an ice shield has only a +0 (light) or +1 (heavy) shield bonus. Also, with each blow from a metal weapon, an ice shield must make a DC 15 Fortitude save. Failure to save results in the ice shield shattering into worthless shards. An ice shield grants the wielder a +2 bonus to any saving throw against Cold-based spells or attacks targeted at the wielder. The bonus does not apply to area-effect spells, nor does it apply to ranged touch attacks.
Ice shields and weapons are perfect examples of items for which the GM needs to use their discretion. For all but the harshest of campaign settings, even permanent ice shields and weapons will be seasonal items at best, sold only during the coldest months of winter.
Source: Treasures of Freeport
The properly cured hide of a shark (or ray) is an excellent substitute for leather. Because of its relative rarity, due mostly to the difficulty in obtaining it, shark skin is used primarily as a decorative component of larger pieces, such as lining the grip of a weapon or to make smaller items such as purses. Of course, as a leather substitute it can appear in any item ordinarily made of leather including armor and saddles. If used on the handle of a weapon, disarm combat maneuvers made against such items suffer a -2 circumstance penalty. Other items crafted of shark skin generally grant the wearer a +2 circumstance bonus to skill checks involving the use of these items. For example, gloves made of shark skin would grant the wearer a +2 circumstance bonus to Acrobatics and Climb checks. A saddle crafted of or lined with shark skin would grant a rider a +2 circumstance bonus to Ride checks made to remain in the saddle. The exact nature and extend of these bonuses is up to the GMs discretion but generally should not exceed +2 and should not affect more than one or two types of skills.
Value 5 gp/lb.
Source Underdark Adventure Guide
Drow and some duergar have mastered the craft of weaving giant spider silk. Incredibly lightweight and durable, it is used to create various goods including clothes, light armor and utilitarian products such as sidepacks, pouches and the like. Silkweave garments and items are 50% lighter than their regular counterparts and are double the price. Silkweave is often shaped and soaked repeatedly in pools rich with lime and other hard minerals to create calcified pots, urns and other crafts of remarkable hardness.
Source Underdark Adventure Guide
Starstone is a mineral that appears underground in small cubical formations near sulfur springs and volcanically active areas. Growing in small clumps no larger than a person's fist, it has an oily feel despite being dry, and leaves no residue. If it is hit by anything hard, this ordinary-looking material immediately begins to glow and give off mild heat.
Starstone is often powdered and mixed with sulfur and other ingredients to manufacture the flash powder used in flashglobes. Its strong illuminative qualities affect darkvision and low-light vision in particular, making it useful for decoration and as a diversion.
Source Underdark Adventure Guide
Umbrite is a dark, dense metal of surprising hardness. While umbrite is no match for the hardness of mithral or adamantine, it is stronger than steel and easily among the most durable metals known. Beyond its capable performance as a metal, umbrite is remarkable for its light-absorbing qualities.
Umbrite seemingly absorbs light at a slow rate, causing shadows around it to deepen considerably. In fact, veins of umbrite are often located by noting areas incurring a sudden loss of light.
Strangely, umbrite is a relatively new discovery, having first been written about within the last 200 years. When the first reports of this material were made, they were dismissed as hallucinations produced by the subterranean gases. This may be one reason umbrite has remained unknown for so long. Umbrite is only found during mining operations for other ores or rare gems, and even more curiously, only in the deepest and darkest locales where few civilized folk venture. One drow archmage has theorized that umbrite may well be a new material. Its appearance and location may be linked with the little-known fact that it only appears near large concentrations of the strange radiations that are said to power many of the enchantments of the drow. Other learned folk have speculated that umbrite might be seepage from the plane of shadow. Many agree with this theory, since umbrite is only found in places of deepest darkness.
Miners have long maintained that umbrite is an unlucky material and bodes ill. Stories abound of miners disappearing frequently after a vein of umbrite has been uncovered. Miners have considered it a nuisance material for decades, since until recently it was impossible to forge umbrite into any useful product.
Duergar apparently possess a process that allows the forging of umbrite. The underdark races have begun vying to learn this secret and, more importantly, to gain control of umbrite mines of their own. Umbrite-forged items are immensely expensive. A forged umbrite item weighing 1 pound or more retains much of its light-absorbing properties. While wielding any umbrite item of 1 pound or more, the user gains a +3 circumstance bonus to all Hide checks. Shadows around him seem to be deeper and darker. This affects a 5-foot area around the wielder and does not extend to others.
Source: Treasures of Freeport
The dark brown wood of the cypress-like waterwood tree that grows in groves in saltwater pools and at the sea's edge is a valuable commodity. Although no stronger than normal wood, its ability to withstand the corrosive effects of seawater make it a prized possession of aquatic races. Waterwood is not subject to the normal rotting effects of other wood when submerged in seawater. Out of seawater, however, it begins to dry out, losing its elasticity and becoming more brittle. Unless placed into seawater for at least 1 hour every 24 hours, waterwood will dry out irreversibly (hardness 2, hp 5/in. when dry). Many aquatic races make use of waterwood and claim sea shore groves as part of their lands. This, plus the fact that the wood must be submerged in water every 24 hours, has kept waterwood from becoming a more common commodity. Although one would think it to be ideal for sea-going vessels, the extra expense and danger of obtaining the wood plus the fact that it is no more resistant to barnacles than ordinary wood has kept it from finding widespread use.
Value: 50 gp/lb.
Source: Treasures of Freeport
Harvested from slain whales, whale sinew is often used as a rope substitute in northern or arctic regions. Whale sinew deteriorates over time in water and thus is no better in that environment than ordinary rope.
Value: 2 gp/lb.