Cocktail ring with 9 diamonds

Cocktail ring with 9 brilliant-cut diamonds totalling approx. 0.57 ct, of which the central diamond is approx. 0.25 ct, RW (F-G)/VS, 18K yellow gold, 11.7 g, ring size: 59, W: approx. 2.4 - 19 mm, mid-20th century, minor signs of wear, handcrafted work.