Ladies 18ct White Gold & Platinum .50ct Diamond Ring

A very desireable ladies engagement ring in platinum and 18ct White Gold, with a beautiful .50ct Brilliant Cut, Clarity= VS1. Colour= E center Diamond set in a raied open back Platinum gallery. Flanked on either side by 2 smaller accent stones in each shoulder. Ring size= L. Can easily be resized. Stamped '18ct & Plat' A & Co'. Circa 1930.