Velvet Obsidian Slab – Thick Cut Mexican Glass for Lapidary or Display Use Mahogany Obsidian and they appeared to have

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

Color & Pattern: Brilliant velvet flash with colorful internal layering

Sadly one side does have a big lip

This material has not been on the market for a very long time

Velvet Obsidian Slab – Thick Cut Mexican Glass for Lapidary or Display Use Mahogany Obsidian and they appeared to haveVelvet Obsidian Slab Chatoyant Old Stock Obsidian for Lapidary Artists This slab is on the thicker side and loaded with magnetite and vibrant flash. It has excellent coloration and movement under light, and should cut into some striking cabochons or make a bold display piece in any collection. Measurements (inches longest approx): 4. 2 x 3. 9 x 0. 3 Mexican Velvet Obsidian is a rare and captivating variety of obsidian known for its velvety chatoyance