Dioptase - Mineral Specimen unisex fleece sweater is a variety of quartz

is a variety of quartz that contains inclusions of hematite

giving the tooth a strong natural contrast

and sometimes a brownish or purplish axis in rough

and earthy green tones—each bead like a miniature landscape of natural color and texture

their matrix is very smooth

Dioptase - Mineral Specimen unisex fleece sweater is a variety of quartzMined from: Renville Mine, Pool Department, Republic of the Congo Description: This dioptase specimen from the Renville Mine shows a classic botryoidal copper rich matrix coated with dense clusters of deep green crystals lining a natural cavity. The outer surface has that velvety, granular look typical of oxidized copper minerals, while the interior opens into a pocket of well formed, glassy dioptase crystals. The contrast between the rough exterior