Large Mexican Velvet Obsidian Rough Chunk! Knightia eocaena mainly composed of opal and

mainly composed of opal and silica

Photos are taken with the stones wet

Weight: Approx 24

I don't enhance photos

Some can have what appears to be organic material present

Large Mexican Velvet Obsidian Rough Chunk! Knightia eocaena mainly composed of opal andMexican Velvet Obsidian is a higher quality obsidian with loads of magnetite that create the velvet like pattern and flashes within! It often features many different colors, and it works into some truly amazing cabochons! It takes an excellent polish and generally cuts fracture free! They can also make awesome pendants or can be great for wire wrapping projects! The color in velvet obsidian is light sensitive. In order to see it, you need to be under