Moissanite Engagement Ring | Universe | Sterling Silver
Moissanite Engagement Ring | Universe | Sterling Silver
Comparable diamond ring: $1,050+
Find your ring size
Most of our rings are adjustable from US 5 to 12. Use this guide to confirm your size fits the range — or to pick the right fixed size when offered.
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.
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 5–12) for most of our rings.
- 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
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Made for everyday brilliance and once-in-a-lifetime moments. The classic silhouette holds a GRA-certified moissanite stone in nickel-free 925 silver.
Details
- Solid 925 sterling silver setting, hand-polished
- GRA-certified moissanite — D-color, VVS clarity, diamond-grade brilliance
- Available in US sizes 6–10 (select at checkout)
- Hypoallergenic, nickel-free
- Backed by a 1-year warranty against manufacturing defects
Why it's special
Moissanite scores a 9.25 on the Mohs hardness scale — second only to diamond — and outshines diamond in fire (the colored sparkle you see when light moves across the stone). Every stone we set ships with a GRA certificate confirming its grade, so you know exactly what's on your hand.
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.
Why moissanite outshines diamond
Same chemistry as a lab-grown gem. Higher brilliance, more fire, 95% less to own.
| Moissanite | Diamond | |
|---|---|---|
| Brilliance (refractive index) | 2.65 | 2.42 |
| Fire (dispersion) | 0.104 | 0.044 |
| Hardness (Mohs scale) | 9.25 | 10 |
| Price for 1ct equivalent | $59 – $200 | $2,000 – $10,000 |
Higher numbers in the first two rows mean more sparkle. Moissanite literally throws more light than diamond — that's not opinion, it's optics.
Every stone is GRA-certified
Every shipment includes an independent GRA lab certificate verifying cut, clarity, color, and carat. No claims — documented proof.
