Black Obsidian Octagon Coasters (2 Pieces) (3-5 inches) Menu Sphere Holder similar to the igneous mineral

similar to the igneous mineral microcline

about 6 pieces)

Rhodochrosite is actually closely related to manganoan calcite

Chalcopyrite is a brassy golden copper ore

Pink Amethyst Butterfly Carving on Stand

Black Obsidian Octagon Coasters (2 Pieces) (3-5 inches) Menu Sphere Holder similar to the igneous mineralBlack Obsidian Octagon Coasters Uniqueness Guaranteed: Every item is one of a kind, making them ideal for all projects or designs. Origin: India Quantity: set of 2 Size: 3" 5" Obsidian is not a gemstone but a kind of glass that forms when volcanic lava rapidly cools in the open air without forming any specific crystalline structures. Depending on the included minerals, obsidian can occasionally exhibit a gold, silver, or rainbow sheen when polished.