Art Deco Platinum Three Stone Old European Cut Diamond Ring with Fancy Yellow Center | 1.67ctw | SZ 6.25 | 15k 50mm Gemstone Flat Cab Cut

50mm Gemstone Flat Cab Cut Onyx

83gm The hallmarks on this piece indicate that it was assayed in Vicenza

Metal 18k Yellow Gold Size 6 1/2 Width Front: 5

63g Gemstone Round Cabochon Cut Green Turquoise Carat 4

Art Deco Platinum Three Stone Old European Cut Diamond Ring with Fancy Yellow Center | 1.67ctw | SZ 6.25 | 15k 50mm Gemstone Flat Cab CutMetal Platinum Size 6 1 4 Width Top: 6. 10mm, Band: 1. 60mm Gemstones Old European Cut Diamonds Carat 0. 65ct Center Stone, 1. 02ctw Side Stones Clarity I2, VS1 VS2 Colour Fancy Yellow, G H This ring is stamped 10% Irid Plat, an alloy with 90% platinum and 10% iridium. This was one of the typical ways platinum jewellery was alloyed and stamped in the early 1900s. The diamonds are are Old European Cut, a precursor to the modern Round Brilliant Cut. Old