This is a Vintage 20 kt. Chinese Yellow Gold Ring with a Gemstone of Black Jade. This ring is unmarked so I used 18 kt test acid and 22 kt test acid. They are available for at home testing in those strengths. There is no test acid for 20 kt.
For sale for home use. So its my best guess this ring is between 20 kt and 22 kt.Test acid fades the test mark a bit so I believe this ring is either 20 kt. And that is a common type of gold used in the making of Chinese jewelry. If you look at one of the test photos you can see a bit of the translucence in the jade. My jeweler and I both say this is black jade and not onyx. I can't be 100% sure unless I take the stone out of the ring and use equipment to test it.
This ring is a size 6. It weighs 12.30 grams. There is a sizing band at the back so this ring can be sized.
The jade measures 18.5 mm by 5 mm. This is a really wonderful ring and can be worn by a man or a woman.
I will pay for signature confirmation. The item "Vintage Chinese 20 KT. Yellow Gold Ring with Black Jade Gemstone" is in sale since Friday, May 14, 2021.
This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Rings\Gemstone". The seller is "zgirl7461" and is located in Vacaville, California. This item can be shipped to United States.