This is a pair of elegant Turquoise stud earrings, set in sterling silver; old stock stabilized Sleeping Beauty Turquoise. 6mm small size. Samples of these stabilized Turquoise gemstones have been tested by the Gemological Institute of American and issued GIA identification certificate #6173790768. The Sleeping Beauty Mine was found in Globe, Arizona and was regarded as one of the most significant Turquoise producing mines on the earth. The Sleeping Beauty Mine heritage began over 40 years ago when it was at first mined for gold and copper. IMPORTANT: The Sleeping Beauty mine in Arizona shut down its Turquoise-mining operations over the summer time of 2012. It has become very rare in the jewelry industry. The Turquoise from the Sleeping Beauty Mine was often preferred by the Zuni Pueblo silversmiths. This Turquoise is from old stock. Now rhodium finished for a white gold or platinum overall look and anti-tarnish.