Rare Pink Mexican Velvet Obsidian Lapidary Rough Chunk Volcanic Glass Blue Opal This chunk of Dinosaur Bone

This chunk of Dinosaur Bone appears to have some silica and calcite present

It was tapped out years ago

it can have marcasite like pattern

and some are broke in ways that make them hard to cut

These fossil snails create some really unique pattern within the stone

Rare Pink Mexican Velvet Obsidian Lapidary Rough Chunk Volcanic Glass Blue Opal This chunk of Dinosaur BonePink is one of the most rare colors within Obsidian. This has tons. Mexican 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