These large earrings measure 2" in length. They feature a conhco a top the earrings with a large purple spiny oyster shell dangling below. The whole earrings is set in solid sterling silver along with silver posts and backs. Perfectly sized for a large earring. They have a medium weight and are easy to wear. NAVAJO HANDCRAFTED EARRINGS Purple Spiny Oyster Shell : Living Spondylus shells are, indeed, very spiny, but the polished product looks very smooth the most used Spondylid Bivalve shell colors include orange, reds, and purples and may include distinct striations and color variations. In the American Oceans, the Spondylids occur along the North American coasts, as far north as North Carolina, on the Atlantic Coast, and northwestern Mexico Purple Spiny Oysters grow in deeper water, making them more difficult to find and harvest.