Spiny Oyster Teardrops
This rare material is a traditional shell used in Native American Jewelry from the southeast. 28mm tall x 17mm wide x 3mm thick, there is a smooth purple/beige side with more porous texture on back. I like either side! Sold in groups of 10 pieces, these were handmade in the 1980's. See earrings in last photo with light orange coral beads.