Hackmanite Crystal Specimen in Pottle Black Friday Spheres Rainbow Obsidian is a rare

Rainbow Obsidian is a rare form of Obsidian lava glass that forms with gas bubbles inside to create the layered colours within

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A 'Black Star' Diopside is the national stone of India

chambered shells

Hackmanite Crystal Specimen in Pottle Black Friday Spheres Rainbow Obsidian is a rareHackmanite is a rare, sulfur rich variety of the mineral Sodalite, celebrated by mineralogists and gem collectors for its mesmerizing optical properties. Hackmanite exhibits Tenebrescence: "reversible photochromism." When exposed to UV light, pale stones (usually white, gray, or pink) rapidly darken to deep pink, violet, or purple. When stored in the dark or exposed to white LED light, the original color returns. These crystals comes in a protective