Ring made of white gold, crystals and diamond 0,50 ct

White gold, fineness Au 750 / 1000. Total weight 5,20 grams. The head of the ring decorated with an ornament of embossed crystals in white gold. Set in the centre with an old brilliant-cut diamond weight 0,55 ct, colour H, clarity P2. Ring band with a central line. Czechoslovak hallmark : cock's head with number 3, indistinct markings. Europe, last century. Ring size 57.