Antique ring centering a marquise-cut diamond of approximately .35 carat, with single-cut diamonds of approximately .45 carat. Accented with calibré-cut emeralds and cabochon onyx. Mounted in millegrain-set platinum. With intricate engraving on the shank. Center: 17.5x11mm, shank: 1.1mm. Circa 1920.

The calibré cabochon onyx at the sides cleverly brings depth and definition. 

Diamond and gold mining has caused devastation in areas such as Africa, wreaking havoc on delicate ecosystems and communities. Choosing to go vintage, you are eliminating the need for more mining and lessening the demand for new diamonds.