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18K Black Onyx and Diamond Dome Ring

Item Details

Materials: 18K Gold
Ring Size: 3.50, 5.00
Hallmarks: Unmarked
Total Weight (grams): 8.50
Primary Stone Type: Black Onyx
Primary Stone Shape: Curved Bars
Primary Stone Count: 2
Primary Stone Dimensions: 21.00 mm x 7.00 mm – approximate
Secondary Stone Type: Diamond
Secondary Stone Shape: Round Brilliant Cut
Secondary Stone Count: 26
Secondary Stone Dimensions: 1.50 mm – 1.70 mm
Total Secondary Stone Carat Weight: 0.50 ctw
Secondary Stone Color Grade: H – J
Secondary Stone Clarity Grade: SI1 – SI2
  • This item has been evaluated and verified by a GIA Graduate Gemologist.
  • All diamond and gemstone grading is done under GIA standards as the mounting permits, where gemstones are present; where mountings impede accurate measurements, (estimated) dimensions are provided. All weights and measurements are estimated and approximate. Industry standard and accepted treatments for gemstones are assumed unless otherwise noted.
  • Pre-owned jewelry may contain minor markings/imperfections throughout.
  • While we represent items accurately on our site to the best of our ability, the color calibration of computer monitors can vary, causing colors to appear slightly different from one monitor to another. Due to this, please note that precise color representation of metal and gemstones is not always possible.


- black onyx is chipped and abraded.
- ring has sizing beads.
- glue residue is present.
- heavy scratches to shank.


- ring size fits like 5.00.
- ring size is 3.50 on mandrel.

Item #


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