18ct Yellow Gold & Platinum Sapphire & Diamond Ring Featuring a fine blue sapphire (approx. 0.36ct, slightly abraded) and 2 diamonds (approx. 0.178ct total) in a crossover design mount. The shoulders are adorned with 3 small diamonds on each side (totaling approx. 0.10ct) Marked 18ct PLAT. Size I. W3.3g (approx.)