The pendant measures 2"1/2 in length with a width of 1"1/2. The set also has matching earrings.Signed by the Navajo artist " H. Piasso" ( Happy Piasso). She is known for her detailed craftsmanship and beadwork. NAVAJO HANDCRAFTED NECKLACE BY ARTIST HAPPY PIASSO 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. One also finds pink, red, brown, yellow, orange, and white on the market. The Yellow Spiny Oyster’s especially rare. 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, on the Pacific Coast. It develops in waters to South America. The Orange Spiny Oyster occurs in shallow to moderately deep waters, where snorkelers and scuba divers readily harvest them. Purple Spiny Oysters grow in deeper water, making them more difficult to find and harvest.