BOUCHERON (Setting) RING In platinum, set with an oval sapphire weighing 4.94 cts, the shoulder highlighted with two small diamonds. Signed. A diamond and platinum ring set with an oval shaped sapphire weighing 4.94 cts, mounted by Boucheron. G.R.S. certificate attesting: origin Burma (Myanmar), natural colour, no thermal modification. RC : Small chips Stone dimensions: 11.52 x 9.21 x 5.28 mm TDD: 48, US: 5 (changeable) Gross weight: 7.3 g (Pt - 950).