The Original Stingray Coral in White Gold and Sterling RingA rare North American gem. 400 million year old gem fossil coral. This is the original fossil coral that we named 'Stingray Coral' and donated to the Smithsonian Institute. They entered this into their American Gem Collection. Deemed as a gemstone by it's rarity and beauty. A very limited amount is available for other custom creations. Please call. Stingray Coral from Alaska, USA 14kt White Gold and Sterling Silver dimensions: 16mm x 18mm Rectangle