Ceylon sapphire, diamond & 18ct yellow gold ring retailed by Troy O' Brien, marked Am 7k. Weight 3.9 grams, ring size P-O, 3x Ceylon sapphires 4 x 3 mm & 2 mm, RBC diamonds 20 = 0.20ct. Box & valuation copy
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- Rbc (round Brilliant Cut) Diamond - An RBC diamond is a "Round Brilliant Cut diamond." It is a popular diamond cut, known for its excellent light performance and overall brilliance. A round brilliant cut diamond has 58 facets, which are precisely cut and polished to maximize the diamond's brightness, fire, and scintillation. The RBC cut is the most popular diamond shape, accounting for approximately 75% of all diamonds sold worldwide.
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