Mexican Velvet Obsidian Rough Chunk! Betrandite Here is a gorgeous slab

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

and they appeared to have a mix of clear blue agate or clear carnelian

It can be a great material for cabbing

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

especially good quality material

Mexican Velvet Obsidian Rough Chunk! Betrandite Here is a gorgeous slabMexican 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