1.1ct Radiant Square Cut Green Emerald Gemstone This Piece Has Excellent Polish & Grade In Color. 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. Natural Emerald Species: Beryl Shape/Cut: Radiant Cut Quality: AAA Clarity: SI Color: Fine Green Polish: Excellent RI: 1.58 Specific Gravity: 2.72 Hardness (Mohs): 7.5-8 View Photos For Further Details.