Most objects built in the Ninth World are made of wood, leather, cloth, stone, glass, or metal.
Smithies and forges can produce high-quality steel objects, but they generally work in iron or bronze. However, plastic (called “synth”), organic stone or steel, exotic crystal, and even stranger materials are not unknown. Items made of those substances are left over from the prior worlds, so many people are familiar with them, although very few know how to produce more. Unlike gold or gemstones, some of these materials are indeed recognized as being rare, but none are valuable for their rarity alone. Ninth Worlders are too practical for that.
Such materials include (but are not limited to):
Adamant silk: This fabric is five times as strong as regular silk and extremely resistant to stains and dirt.
Azure Steel: This bluish metal is not steel and may not be from Earth at all. While somewhat lighter than steel, it is at least 10 times harder and tougher.
Molded Foam: This substance has the mass of soap foam but has been molded firmly into other shapes, such as dishes, boxes, or other common objects. Most kinds of molded foam are brittle, but some types are more durable.
Organic stone: Although it has the appearance and strength of granite (or sometimes other minerals, such as marble or quartz), this material is grown rather than quarried. Some varieties of organic stone are half as light as normal stone, but other types are just as heavy—if not heavier.
Pliable Metal: This material retains the strength and durability of steel but is pliable enough to make bags, boots, or similar objects. Sometimes pliable metal temporarily molds to the shape of whatever is pressed against it, similar to 21st-century memory foam.
Shapestone: Like stone out of precise molds, shapestone has the durability of granite but is actually ceramic.
Stronglass: Although this material looks, feels, and is worked like glass, it has the strength of steel.
Synth: This is a Ninth World name for any of a number of materials similar to various plastics common in 21st-century Earth. They are durable but not particularly strong.
Synthsteel: Similar in appearance to normal synth, this somewhat misnamed substance is harder and tougher than synth, making it stronger but far lighter than steel.