Spiny Oyster Mojave Turquoise Sterling Silver Ring The vibrant dome cut pink spiny oyster Mojave turquoise stone that adorns this ring is simply enchanting and is bezel set in sterling silver. This type of stone is created using spiny oyster shells and natural turquoise, compressed and combined together with veins of copper, vivid pink dyes, and resin. The last image shows the stone under UV light. 15mm 4.63 grams Sz 8.5 Marked 925