Pendant with Mexican Rhyolite Cantera Boulder Opal in Sterling Silver

Vintage sterling silver pendant set with a Mexican 

rhyolite cantera boulder opal. The opal deposit extends all of the way through the cabochon to the back and has play of color throughout. Often times these stones have crazing, this one does not. Super nice with rainbow flash. 

Pendant measures 1 3/8" long by 3/4" wide. Weight: 5 grams. Marked 925. Made in Mexico. 

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