Mexican Velvet Obsidian Lapidary Rough Chunk Volcanic Glass By the Lbs each one in the photos

each one in the photos will all be present

Moroccan Turritella is a form of Turritella that has been silica replaced

It can occasionally have fractures but generally yields very workable slabs for cabs

Weight: Approx  7 lbs 8 oz

Measurements (inches - longest - approx):  5 x 4

Mexican Velvet Obsidian Lapidary Rough Chunk Volcanic Glass By the Lbs each one in the photosMexican Velvet Obsidian is a higher quality obsidian with loads of magnetite that creates a velvet like pattern and flashes within. It often features many colors and works into some genuinely amazing cabochons. It takes an excellent polish and generally cuts fracture free. They can also make awesome pendants or be great for wire wrapping projects. The color in velvet obsidian is light sensitive. In order to see it, you need to be under bright light,