Black Rose-Cut Onyx Ring Set in Sterling good Silver

Large Natural Rose-Cut Black Onyx Ring Set in Sterling Silver Circa. 1970 American

New old stock Hand set stone. The ring has not been owned or worn by anyone No mass production.
Huge natural black onyx stone with a rose-cut finish The faceted stone measures a full 3/4 inch in diameter good The setting is sterling silver with four prongs Size 8 Weight is 8.7 g. 5.6 dwt

In pristine condition