A bold onyx statement piece. The reconstituted onyx is hand-set in 925 sterling silver — even in tone and true to the photo.
Specifications
- Total weight: ~3.7 g
- Base: hallmarked 925 sterling silver (3.1 g), rhodium-plated for a bright, tarnish-resistant finish
- Stones: 44 cubic zirconia, 1 cabochon (synthetic stone), hand-set
- Hand-set reconstituted onyx — real onyx, fused for even colour and strength
- Available in US sizes 6.5–9 (select at checkout)
- Hypoallergenic, nickel-free
- Backed by a 1-year warranty against manufacturing defects
Why it's special
The onyx here is reconstituted — genuine onyx, ground fine and fused into one solid, even-toned stone. Same mineral, same depth of colour, but stronger than a natural slab and consistent from piece to piece: what you see in the photo is what arrives.
Care
Hand-polished and tarnish-resistant. Avoid contact with perfume, lotion, and chlorinated water. Wipe with a soft cloth after wear and store in the jewelry box it ships in.
14K gold bonded to sterling silver
Real 14K gold heat-fused to a hallmarked 925 silver core — 10–20× thicker than the micron-thin gold wash used on costume jewelry.
Real gold
A real 14-karat gold layer, weighed and recorded for every piece — not a gold-coloured coating.
Thicker
Heat-fused under high pressure to a sterling silver core, so it won't flake or peel.
Daily wear
Lasts years through showers, workouts, and everyday life. Hypoallergenic silver underneath.
Why it outlasts costume jewelry
Gold-washed brass fades and marks the skin. Gold bonded to 925 silver keeps its colour, and the metal underneath is still silver.
Black Onyx Ring | Onyx Bar Disc | Sterling Silver
Black Onyx Ring | Onyx Bar Disc | Sterling Silver
SKU:1617R-65
Same piece in solid 14K gold: $600+
Find your ring size
Most of our rings are adjustable from US 6 to 11. Use this guide to confirm your size fits the range — or to pick the right fixed size when offered.
How to measure
Measure a ring you already own
Take a ring that fits the same finger. Measure the inside diameter (across the centre, edge to edge) with a ruler in millimetres. Match it to the chart.
Use a strip of paper or string
- Cut a thin strip of paper (about 1 cm wide) or take a piece of string.
- Wrap it around the base of your finger snugly — not tight.
- Mark where the ends meet, then measure the length in millimetres.
- That number is your inside circumference. Match it on the chart.
Size chart
Match your inside diameter or circumference (in mm) to the row that's closest.
| US | UK | EU | Ø mm | Circ. mm |
|---|---|---|---|---|
| 4 | H | 47 | 14.9 | 46.8 |
| 4.5 | I | 48 | 15.3 | 48.0 |
| 5 | J½ | 49 | 15.7 | 49.3 |
| 5.5 | L | 51 | 16.1 | 50.6 |
| 6 | L½ | 52 | 16.5 | 51.9 |
| 6.5 | N | 53 | 16.9 | 53.1 |
| 7 | N½ | 54 | 17.3 | 54.4 |
| 7.5 | O½ | 55 | 17.7 | 55.7 |
| 8 | P½ | 57 | 18.1 | 57.0 |
| 8.5 | Q½ | 58 | 18.5 | 58.3 |
| 9 | R½ | 59 | 19.0 | 59.5 |
| 9.5 | S½ | 60 | 19.4 | 60.8 |
| 10 | T½ | 62 | 19.8 | 62.1 |
| 10.5 | U½ | 63 | 20.2 | 63.4 |
| 11 | V½ | 64 | 20.6 | 64.6 |
| 11.5 | W½ | 65 | 21.0 | 65.9 |
| 12 | X½ | 67 | 21.4 | 67.2 |
Highlighted rows mark the adjustable range (US 6–11) for most of our rings.
Fit tips
- Measure at the end of the day. Fingers are smallest in the morning and swell slightly by evening — measuring then gives the most comfortable fit.
- Keep hands warm. Cold fingers can be up to half a size smaller.
- Wider bands fit tighter. If a ring is 6 mm wide or more, consider going up by half a size.
- Knuckle larger than the base? Size for the knuckle so the ring slides on, and pair with a ring sizer if it spins.
- Between two sizes? Choose the larger one — it's easier to resize down than up.
Still unsure? Email info@oliviastarjewelry.com with your circumference in mm and we'll recommend a size.
Place your order within — to catch the next shipment
Arrives —
Ships with UPS · Free over $75
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