The various colors of sapphire (corundum) each have distinct
names. Ruby is, of course, red corundum, and the term
Sapphire specifically identifies the blue variety.
Jacinth is orange, Pellucidine is clear and colorless,
Royalite is purple, Saffronite is yellow or golden, and
Verdanite is green. Due to the hardness and durability
of corundum, all these stones are particularly popular in the
creation of magic items (along with diamond, of course). Most
corundum stones are mined by dwarves in Olan.