Vintage 1960s Van Cleef & Arpels Invisible Set Sapphire Domed Ring with Diamonds

Finely crafted in platinum with Square cut signature invisible set Sapphires weighing approximately a total of 17.80 carats and Round Brilliant cut Diamonds weighing approximately a total of 1.70 carats.
Signed by Van Cleef & Arpels New York
Circa 1960s
Size 6