Korite
Korite is the largest commercial producer of ammolite. The company produces a "Q-stone" ("quad stone"), jewelry consisting of small pieces of red/blue/green ammonite gemstones strategically placed to create the desired colours. Korite is based in Alberta, Canada. The firm's sister company, Canada Fossils Ltd., provides it with ammonites and other fossils. It is a member of the American Gem Trade Association.