Vintage 10K Onyx Diamond Ring, Mid Century, Long Black Oval Cabochon, Size 7.75

Vintage condition: Fair/Good (some minor wear on the Onyx and some very minor setting/band; the Onyx is slightly loose in the setting, but secure; some slight oxidation). Lovely vintage Art Moderne style mid century starement ring! Featuring a black 18x9mm Onyx oval cabochon, and a 7x5mm solid white gold center with a 0.01 carat center drilled in/inlayed Diamond; set in 10K solid yellow gold. Marked 10KP (mostly worn off), and acid tested as solid 10K gold. This ring is a size 7.75 This ring weighs 3.01g This ring measures 20mm from the front; and 1.25mm from the back of the band.