Vintage 18ct & Platinum Diamond Engagement Ring

A wonderful vintage 18ct yellow gold ring ,comprising of a beautiful .51ct Old European Cut Diamond, Clarity= SI1 - Colour= H, claw set in a Platinum raised, pierced open back gallery. A further 3 accent Diamonds set in Platinum in each shoulder, leading to a yellow Gold shank. Ring size= K, can easily be resized. Stamped '18ct PLAT 05). Circa 1920.