This is a gorgeous 925 Silver Trilobite Fossil Ring from Taxco Mexico.
I got it on a recent trip there
Taxco is famous for it's artisans. It became a silver mining town when large loads were found in the 1500's and is now a producer of some of the finest quality silver jewelry.
Size: 7.25 US ( it can size up or down a size and is adjustable )
Weight: .19 oz ( 5.5 gm )