One polished, stamped, and tested platinum necklace marked Oscar Friedman. The necklace is mounted with: 17 genuine faceted tanzanite weighing approximately 51.35 carats, and 632 genuine round diamonds weighing approximately 10.06 carats. The necklace measures 18.5 inches in length and is finished with a tension lock clasp and folding safety clasp. This item weighs 66.3 grams, condition is new, excellent workmanship. #MAIN GEMSTONES# Species: Zoisite; Variety: Tanzanite; Shape: Cushion; Cutting Style: Modified Brilliant Cut; Quantity: 17 Tanzanite; Measurements: 9 x 6 - 12 x 8mm; Total Weight: 51.35 carats; Color: Violetish Blue; Cut Grade: Very Good; Refractive Index: 1.691 - 1.700 DR; Birefringence: 0.008 - 0.013; Hardness: 6.5 - 7 #ADJACENT GEMSTONES ON NECKLACE# Identity: Natural Diamond; Shape: Round; Cutting Style: Brilliant Cut; Quantity: 632 Diamonds; Measurements: 1.3 - 2.0mm; Total Weight: 10.06 carats; Clarity Grade: SI2-I2; Color Grade: G-I; Refractive Index: 2.417; Hardness: 10 #TOTAL TANZANITE WEIGHT: 51.35 cts; TOTAL DIAMOND WEIGHT: 10.06 cts; WEIGHT OF ITEM: 66.3 grams; METAL: Platinum #Size: 17