Gold sheen

Gold sheen was a rare variety of obsidian, golden in color and flecked with minute spangles.

Description
This semi-precious stone was polished to a glassy gleaming finish, usually tumbled so as to retain as much of the stone as possible. Gold sheen was brittle but in the past was often used to ornament belts or shields. Chips of gold sheen were frequently used as a form of currency among mercenary encampments. A typical stone had a base value of 50 gp.