Uruguay Sodalite Rough Chunk! Mexican Agate but some of the material

but some of the material is just stunning

Measurements (inches - longest - approx): 3 x 2

4 Pounds Random Pull Mexican Velvet Obsidian Rough

but the most accepted theory is that they are coprolites and intestinal casts from Predatory Sea Worms

Uruguay Sodalite Rough Chunk! Mexican Agate but some of the materialUruguay Sodalite is known for having much deeper blue than most any other type of Sodalite! Sodalite is a well renowned blue tectosilicate lapidary material! It gets its name due to its high sodium content. It tends to work into great cabochons, and takes a great polish. It has historically been mistaken for Lapis Lazuli, due to the bright blue contrast both stones can have. Weight: Approx 9 lbs 1. 2 oz Measurements (inches longest approx): 8. 9 x 8.