Sterling Silver Amethyst Marcasite Ring Size 8.5
Oxidized Stamped .925 Sterling Silver with Marcasite 17mm X 12mm Zirconia
Cubic zirconia is crystallographically isometric,
an important attribute of a would-be diamond simulant
Marcasite is a metallic, black-grey stone, similar in chemical makeup to pyrite, but different in crystal structure. It is machine cut and polished, giving jewelry made with it an antiqued vintage look.