Dioptase - Mineral Specimen calcium sodium feldspar and it comes from one

and it comes from one very limited area in northern Tanzania

and colors with precision

Origin: Kamelia

Description: This is my most highly recommended rock tumbler

Gypsum minerals form when sulfate-rich water evaporates in sedimentary basins

Dioptase - Mineral Specimen calcium sodium feldspar and it comes from oneMined from: Renville Mine, Pool Department, Republic of the Congo Description: This dioptase specimen shows a tight cluster of deep teal green crystals growing out of a pale, weathered matrix. The crystals are more elongated and blade like than typical blocky forms, with sharp terminations and a strong vitreous luster. The color leans toward a darker, almost inky green, especially in the thicker crystals, while thinner edges show more transparency.