Black Obsidian 20-22mm Spheres

You will receive ONE random stone Sizes will vary 20 - 22mm Obsidian is a glassy, silica-rich volcanic rock with a hardness of 5 to 5.5. It is an amorphous stone, meaning that its structure contains no regular geometric pattern. Because it breaks with a very sharp conchoidal fracture.  Obsidian is most frequently black or very dark brown, but it can also be gray or green. In addition, various sheens, color variations, markings and undertones of color make for an array of different types of Obsidian used for jewelry stones, ornaments, and metaphysical items. The most prominent of these are Black, Snowflake, Mahogany, Rainbow, Peacock, Gold and Silver Sheen.