- Gemstone Details Gemstone Details
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58 Old Mine Cut Diamonds Carat Weight: 12.00 carat Color: F-H Clarity: SI-I1 Total Diamond Carat Weight: 12.00 Each piece of jewelry at Lang is carefully cataloged by our expert GIA Graduate Gemologists to document all gemstones, hallmarks, method of manufacture and materials. A point of sale report is provided upon purchase.