Natural Gems Only: 100% Earth Mined No Synthetics, No Simulants Full Disclosure of Any Treatments Our gemstones are hand-selected with a strict criteria for cut, clarity, and color. All of our gemstones are inspected, evaluated, and screened by a GIA Certified Gemologist to guarantee quality and accuracy in grading. Specifications Natural Opal Species: Opal Shape/Cut: Round Rose Cut Cabochon Size: 6mm Quantity: 1 Gemstone Quality: AAA Clarity: Clean Color: Fine Color Play Polish: Excellent RI: 1.45 Specific Gravity: 2.15 Hardness (Mohs): 5-6.5 Treatment: None Origin: Ethiopia