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Combining a clean geometric silhouette with exceptional brilliance, this 2-carat radiant-cut moissanite is designed to capture light through a precise arrangement of brilliant-style facets. Its elongated form and softly clipped corners create a refined balance between modern structure and lively sparkle. Beneath the center stone, a delicate hidden halo introduces an additional layer of brilliance from the side, while an approximately 0.30-carat lab-created blue sapphire is discreetly set beneath the gallery as a distinctive signature detail. Finished with a polished 2mm comfort-fit band, the design feels contemporary, sophisticated, and striking from every angle.
| Center Stone | Premium STDIAM™ Moissanite (D Color / VVS1) |
| Center Stone Weight | Approx. 2ct |
| Stone Shape | Radiant Brilliant Cut |
| Cut Quality | Excellent Precision Cut (Diamond-Standard 4Cs Craftsmanship) |
| Accent Stone | Lab-Created Blue Sapphire |
| Accent Stone Weight | Approx. 0.30ct |
| Setting | Four-Prong Setting with Hidden Halo |
| Band Width | 2mm (Comfort Fit) |
| Metal Base | Solid S925 Sterling Silver |
| Plating Standard | 8-Layer 18K Gold Plated (2.5μm Thickness) |
| Refractive Index | 2.65–2.69 |
| Skin-Friendly | Lead-Free & Nickel-Free |
| Packaging | Signature Walnut Wood Box |
| Certification | GRA Authenticity Certificate Included |
Find your closest match using the chart below.
| US / CA MX |
UK / AU IE / NZ / ZA |
FR | DE / RU UA / Asia |
IN / CN / JP SA / TR / IL |
IT / ES NL / CH |
DIA (mm) |
CIRC (mm) |
|---|---|---|---|---|---|---|---|
| 4 | H ½ | 47 | 14.9 | 7 | 7 | 14.9 | 46.8 |
| 4.5 | I ½ | 48 | 15.3 | 8 | 8 | 15.3 | 48.0 |
| 5 | J ½ | 49 | 15.7 | 9 | 9 | 15.7 | 49.3 |
| 5.5 | L | 51 | 16.1 | 11 | 11 | 16.1 | 50.6 |
| 6 | M | 52 | 16.5 | 12 | 12 | 16.5 | 51.9 |
| 6.5 | N | 53 | 16.9 | 13 | 13 | 16.9 | 53.1 |
| 7 | O | 54 | 17.3 | 14 | 14.5 | 17.3 | 54.4 |
| 7.5 | P | 56 | 17.7 | 15 | 16 | 17.7 | 55.7 |
| 8 | Q | 57 | 18.1 | 16 | 17 | 18.1 | 57.0 |
| 8.5 | Q ½ | 58 | 18.5 | 17 | 18 | 18.5 | 58.3 |
| 9 | R ½ | 59 | 18.9 | 18 | 19 | 18.9 | 59.5 |
| 9.5 | S ½ | 61 | 19.4 | 19 | 21 | 19.4 | 60.8 |
| 10 | T ½ | 62 | 19.8 | 20 | 22 | 19.8 | 62.1 |
Fit Tip: If your knuckle is noticeably larger than the base of your finger, we recommend measuring both and choosing a size in between to ensure the ring slips on comfortably.
→ View Full Size Guide & Measure Tips
If it’s not quite right, our hassle-free exchange makes it effortless to get the one that is. We offer ONE FREE RESIZING within 30 days of purchase.
Lifetime Stone Guarantee
Your center Moissanite is guaranteed for life and will never lose its brilliance.
2-Year Craftsmanship Warranty
Every piece is protected against verified manufacturing defects.
*Note: Excludes normal wear, accidental damage, lost items, and third-party modifications.
Clear answers to the questions shoppers ask most about moissanite, from durability and brilliance to long-term care.
Moissanite is a real gemstone with its own chemical composition and optical properties. It is not a type of diamond or a fake diamond.
Modern jewelry-grade moissanite is lab-created for consistency and clarity, with a distinctive brilliance and fire of its own.
Moissanite and diamond are different gemstones. Diamond is carbon, while moissanite is silicon carbide.
Visually, moissanite often displays more colorful fire, while diamond has its own characteristic balance of white brilliance and dispersion. Both can appear bright and refined, but their optical character is not identical.
Yes. Moissanite measures approximately 9.25 on the Mohs hardness scale, making it highly resistant to scratching and well suited to regular wear.
As with all fine jewelry, the setting and metal should still be protected from hard impacts, abrasive surfaces and strenuous activities.
Moissanite does not normally become permanently cloudy with wear. Oils, lotions, soap and everyday residue can temporarily soften its sparkle.
Gentle cleaning can restore its clarity and brilliance, while regular care also helps keep the surrounding metal and settings looking their best.
Clean moissanite jewelry with lukewarm water, mild soap and a soft brush, then rinse thoroughly and dry with a soft, lint-free cloth.
Pay particular attention to the underside of stones and around settings where residue may collect. When not being worn, store your piece separately in its original STDIAM walnut wood box to help reduce contact and rubbing against other jewelry.
For more detailed guidance, visit the STDIAM Jewelry Care Guide .
Moissanite follows a different production, supply and pricing structure from diamond. Because jewelry-grade moissanite can be created in a controlled laboratory environment, it can offer substantial visual presence and durability at a lower price point.
The lower price does not make it a lower-quality version of diamond. It is a different gemstone category with its own characteristics.
The difference can be subtle at a glance, especially once a stone is set in jewelry, but moissanite and diamond are not visually identical.
Moissanite generally shows stronger spectral fire, while diamond has its own characteristic pattern of brilliance. Cut, stone size and lighting can all influence how noticeable those differences appear.
Yes. Moissanite combines high durability, distinctive brilliance and a wide range of cuts and settings, making it suitable for engagement rings as well as jewelry chosen for anniversaries, milestones, gifting or everyday wear.
Ultimately, the right choice comes down to the design, materials and character that feel right for you.