Ziose

Ziose is the name given by sages to a particular facet-grade variety of zoisite; a rare mineral that yields cut stones that flash three vivid hues depending on how the light catches them or in what direction they are viewed--purple, blue, and red, or purple, green, and red. Very large (fist- or foot-sized) specimens are sometimes found, and are prized for use in pendants by humans, demihumans, and humanoids of large stature. A typical specimen has a base value of 100gp.