White gold earrings with six diamonds and six rubies

18 carat white gold, natural diamonds and natural rubies. Fineness Au 750 / 1000, total weight 3,40 grams. White gold diamond earrings. In the lower part, set with six modern brilliant-cut natural diamonds weighing 0,30 ct, colour G, clarity Si-P. Six natural rubies. The upper receding part at the corners decorated with embossed horizontal lines. Jeweler's button closure. Marked : new Czech hallmark of a cock's head with number 3, purity 750, Italian maker's mark. Italy second half of the last century. Height 15 mm, length 15 mm.