Velvet Obsidian Slab - Bright Magnetite with Wavy Flows halo pattern This fossil stromatolite from the

This fossil stromatolite from the Sahara represents billions of years of geological history

The combination of bold herringbone grain and hematite mineralization means this slab is going to produce spectacular cabochons

These are mined in Las Choyas

This specimen exhibits exceptional Laguna-style coloration with striking fireworks burst patterns adding visual drama

with attractive rough just now hitting the market

Velvet Obsidian Slab - Bright Magnetite with Wavy Flows halo pattern This fossil stromatolite from theVelvet Obsidian Slab Bright Magnetite with Velvety Wavy Flows Rare Mexican Volcanic Glass This beautiful slab of Velvet Obsidian features bright magnetite and velvety wavy flows throughout, creating a mesmerizing visual effect. The slab has very good potential and could produce some really nice cabochons or a gorgeous display piece of this amazing material. With the mine essentially depleted, slabs like this are becoming increasingly difficult to