Mexican Velvet Obsidian Lapidary Rough Chunk Volcanic Glass Cretaceous The magnetite in this one

The magnetite in this one is present

that we were lucky enough to find some washout from the old holes

Some of those included (not all) are Eagle Rock Plume Agate

Old Stock Oregon Oolite is a beautiful well formed Oolite that has some great patterns and can sometimes even have nice blues

One thing that is certain though

Mexican Velvet Obsidian Lapidary Rough Chunk Volcanic Glass Cretaceous The magnetite in this oneMexican 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,