Cocktail ring with ruby cabochon and diamonds totaling approx. 1.5 ct,

Cocktailring with oval cabochon-cut ruby, with many signs of natural growth and ca. 35 baguette- and trapeze-cut diamonds totalling ca. 1.5 ct, ca. WHITE-STW (H-J)/VS-SI, 1x chipped, asymmetrical setting, 18K white gold, 8.3 g, ring size 50 with visible enlargement, 2nd half of 20th century, signs of wear, unknown maker's mark 'ST'.