Gorgeous 12.00ct Columbia Emerald, Diamond, and Onyx Ring set in platinum. Art Deco circa 1940. Diamonds weight 1.58cts total. Diamond weigh break down:
2 diamonds = .10ct each, total - .20cts
2 diamonds = .08 each, total - .18cts
24 diamond = .05cts each weighing 1.20cts total
The diamonds are European cut and have excellent color and clarity.