Gemstone

A gemstone is a mineral, with applications in many aspects of life on Roshar. On Earth, some are the same type of crystal but with different color and chemical signatures. Sapphire and ruby are both types of corundum. Smokestone and amethyst are both types of quartz. Emerald and heliodor are both types of beryl. Zircon is itself a mineral that manifests in many colors; blue is enhanced by heat. Topaz is a rare silicate mineral that also manifests in a variety of colors. Diamond too is a rare mineral. Garnet is comprised of a group of silicate minerals.