One polished. stamped, and tested platinum ring marked Oscar Friedman. The ring is mounted with: 1 genuine GIA certified tanzanite center stone weighing 12.78 carats. and 194 genuine round diamonds weighing approximately 2.12 carats. This item weighs 16.3 grams condition is new, excellent workmanship. #MAIN GEMSTONE# GIA Report No.: 6224427254 Species: Zoisite Variety: Tanzanite Shape: Oval Cutting Style: Brilliant Cut Crown, Modified Brilliant Cut Pavilion Measurements: 17.46 x 12.97 x 7.67mm Weight: 12.78 carats Color: Bluish Violet Transparency: Transparent Refractive Index: 1.691 - 1.700 DR Birefringence: 0.008 - 0.013 Hardness: 6.5 - 7 #ADJACENT GEMSTONES ON RING# Identity: Natural Diamond Shape: Round Cutting Style: Brilliant Cut Quantity: 194 Diamonds Measurements: 1.0 - 2.2mm Total Weight: 2.12 carats Clarity Grade: VS2-SI1 Color Grade: F-G Refractive Index: 2.417 Hardness: 10 TANZANITE WEIGHT: 12.78 ct TOTAL DIAMOND WEIGHT: 2.12 cts WEIGHT OF ITEM: 16.3 grams METAL: Platinum Size: 7 1/2