Red Hyalite Opal Specimen Mix from Ojuela Mine slabs This means it can generate

This means it can generate an electrical charge when heated or when subjected to pressure

which can display an iridescent effect (also called schiller effect)

Specimen (C) has malachite as well

Petroleum Quartz from Mexico is a unique type of elestial quartz

blue colored

Red Hyalite Opal Specimen Mix from Ojuela Mine slabs This means it can generateWe were thrilled to acquire a small lot of these Red Hyalite Opal Specimen Mix from Ojuela Mine, which have a fascinating combination of minerals. In regular daylight, these pieces have a beautiful visual contrast. A rich, earthy red from Hematite inclusions coats and stains a matrix of crystalline Calcite and sparkling drusy Quartz. The interplay between the deep red and the bright white is aesthetic all on its own. Draped over parts of the surface,