Mexican Velvet Obsidian Rough Chunk! Betrandite Here is a stunning 8

Here is a stunning 8 lbs 13 oz Polished display specimen showing some great flash

This material is generally ocean fossils that have been dissolved/eaten by bacteria

and some wild designs

It can be a great material for cabbing

Here is a gorgeous slab of the rare Mexican Fortification agate known as Laguna Agate

Mexican Velvet Obsidian Rough Chunk! Betrandite Here is a stunning 8Mexican 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