1.30-1.92 Cts of 6 mm AAA Round Russian Lab Created Emerald Stud Earrings Martini-set in 14K White Gold-Screw Backs Timeless studs for any special occasion. The studs have the finest AAA quality round Russian Lab Created Emerald prong set in 14K White Gold. Lab created gemstones are developed in the lab creating the same pressure and temperature, these stones have the same chemical, physical, and optical properties as natural gemstones. The three-prong martini settings shows least metal and makes the studs look glamorous. 30 Day No questions asked Return Policy Free-Shipping within US May Birthstone/Anniversary/Birthday Gift