This is a lovely vintage 10 K Onyx ring. I love this style of ring as it elongates the look of your finger. This is a substantial and well made ring as it weighs 6.3 grams. It is handsome in its simplicity.
The face of the Onyx stone is 1" by 1/2" and the ring is size 4.25, older rings are often small. But it can be sized by your local jeweler if needed. Excellent estate condition.