Spiny Oyster Shell

Spiny oyster shell is found in the Sea of Cortez off Baja California, Mexico. The shell color corresponds to the depth of the water where it is harvested. Spiny oyster shell has a variety of colors deeper underwater the darker the shell is, while the closer to the service the shell is white to a pale orange. Where in deeper water the shell is dark red-orange to purple. Purple is the most rare and valuable.