A vintage David Webb platinum and 18K yellow gold rhombus shape cabochon turquoise ring with round brilliant-cut diamonds. Circa 1980. Diamond weight 3.30cttw. Fluted shank. Center Diamond Weight: 3.30 Measurements: Size: 7.5 Metal Type: Platinum & 18K Yellow Gold Metal Weight: 28.3 gr. Signed: David Webb Condition: Excellent. Stock: RR9228