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 patterns. Because it breaks with a very sharp conchoidal fracture, it has been used for making arrowheads and other tools since Paleolithic times. The name Obsidian is derived from the name of the prominent ancient Roman, Obsius. 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 for jewelry stones, ornaments and metaphysical items. 

Black Obsidian | Tumbled

Localities: Worldwide

Rarity: Easily Obtained

Hardness: 5 - 5.5

*Price is per individual piece unless noted. Due to the natural variations of each piece, please note that the actual item you receive may not appear exactly as pictured. Rest assured, however, that our dedicated team will do their best to hand-select the most attractive specimen(s) that we have in stock at the time of your order. Sizes and weights are always approximate.