RING In platinum and yellow gold, set with a cushion-shaped ruby weighing 3.00 cts, the geometric shoulder set with round and baguette diamonds. A diamond, platinum and 18k gold ring set with a cushion-shaped ruby weighing 3.00 cts. Gemological Consultancy certificate stating: origin Burma (Myanmar), natural colour, no heat. RC : Stone dimensions: 8.60 x 7.93 x 4.60 mm. TDD: 54-55; US: 7 (changeable). Gross weight: 7.1 g (Pt - 950 and 18k - 750).