Tantalum 999 with a matte finish, top 1.5 x 1.4cm. Size 54/55.
About tantalum (courtesy of Wikepedia):
Previously known as tantalium, it is named after Tantalus, a villain from Greek mythology. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. It is part of the refractory metals group, which are widely used as minor components in alloys.The chemical inertness of tantalum makes it a valuable substance for laboratory equipment, and as a substitute for platinum.
