Vintage 1.80 Carat Minor Oil Colombian Emerald & Diamond Ring, circa 1930A breathtaking Art Deco emerald and old cut diamond ring. The incredibly vivid Colombian emerald in the centre has received only minor clarity enhancement, giving the stone an incredible glow. The emerald is secured in a four claw 18k yellow gold collet, and is flanked by a pair of 0. 22ct (approx.) old European cut diamonds set in platinum. Spear shaped platinum shoulders lead to a slim, S shaped 18k yellow gold shank. Currently size N (UK) or 6 1 2