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Highlights & Features
Inspired by the quiet strength of modern minimalism, this ring honors the natural brilliance of the Radiant cut. Its elongated silhouette is designed to gracefully flatter the finger, offering a look that is both striking and slender.
Specifications
| Center Stone | Premium Stdiam™ (D/VVS1) |
| Cut Style | Radiant Modified Brilliant Cut |
| Metal Options |
18K White Gold Vermeil (925 Silver) 18K Yellow Gold Vermeil (925 Silver) Solid 10K White Gold Solid 10K Yellow Gold Solid 14K White Gold Solid 14K Yellow Gold |
| Band Width | 1.8mm (Comfort Fit) |
| Plating Standard |
8-Layer 18K Gold Plated (2.5μm Thickness) Applies to vermeil options only. |
| Setting Type | Master-Hand Micro Setting (Secure Prongs) |
| Refractive Index | 2.65 - 2.69 (Outsparkles Diamond) |
| Skin-Friendly | 100% Lead-Free & Nickel-Free |
| Packaging | Signature Walnut Wood Box |
| Certification | GRA Authenticity Certificate Included |
Choose Your Metal
Swipe to compare →
18K
White Gold Vermeil
18K white gold over 925 sterling silver
The bright look of white gold at an accessible price.
The plating may wear over time, but the similar silver tone beneath makes color changes less noticeable.
BRIGHT WHITE · EVERYDAY VALUE
18K
Yellow Gold Vermeil
18K yellow gold over 925 sterling silver
A beautiful, affordable way to enjoy the rich look of gold.
The gold plating may gradually fade with wear, revealing the silver beneath.
RICH GOLD TONE · EVERYDAY VALUE
10K
Solid White Gold
Solid 10K white gold throughout
A lasting choice for everyday wear, with white gold all the way through.
The surface brightness may soften with wear; beneath the finish, it is still white gold.
SOLID GOLD · WHITE GOLD THROUGHOUT
10K
Solid Yellow Gold
Solid 10K yellow gold throughout
Warm gold color that comes from the metal itself.
As the surface wears, the metal beneath retains its gold tone, with no silver base to show through.
SOLID GOLD · LASTING GOLD TONE
Not sure about your size?
✓If you're between sizes, choose the half size up for comfort
✓Standard US sizing with EU / UK conversion reference
✓Free resizing within 30 days for peace of mind
✓Standard US sizing with EU / UK conversion reference
✓Free resizing within 30 days for peace of mind
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.
Shipping & Crafting
Crafting Time
Most standard whole sizes (5–9) are crafted within
5–7 business days
.
For the best fit, half sizes and sizes 4, 10 & 11 require additional sizing and finishing steps and typically take 10–15 business days .
For the best fit, half sizes and sizes 4, 10 & 11 require additional sizing and finishing steps and typically take 10–15 business days .
Free Standard Shipping
Worldwide · 150+ countries
7–12 Business Days
VIP Shipping
Available at checkout · $14.90
4–7 Business Days
Delivery estimates apply after dispatch. Crafting time is separate from shipping time.
Risk-Free Purchase
30-Day Returns & Exchanges
Returns and exchanges available within 30 days of delivery.
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.
Crafted by Masters. Engineered Beyond Tradition
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Moissanite Guide
Moissanite, Explained.
Clear answers to the questions shoppers ask most about moissanite, from durability and brilliance to long-term care.
Is moissanite a real gemstone or a fake diamond?
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.
What is the difference between moissanite and diamond?
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.
Is moissanite durable enough for everyday wear?
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.
Does moissanite get cloudy or lose its brilliance over time?
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.
How should I clean and care for moissanite jewelry?
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 .
Why is moissanite more affordable than diamond?
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.
Can people tell the difference between moissanite and diamond?
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.
Is moissanite suitable for engagement rings and meaningful jewelry?
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.
R
I absolutely love the clean, modern look of this ring. The radiant cut stone is huge and brilliant, and the sleek gold band makes it so elegant and sophisticated. Perfect for everyday wear!
S
My husband got me this for our anniversary, and I couldn't be happier. The rectangular radiant cut is so sophisticated and timeless. The gold setting looks premium and pairs perfectly with my other stacking rings. A gorgeous piece for any mature woman's collection.
E
Stunning is an understatement! This radiant cut moissanite is absolutely breathtaking. The dainty gold band makes the stone look even bigger and more brilliant. It's the perfect combination of minimalist elegance and luxury. I've been wearing it to meetings all week and have received so many compliments.
V
My husband surprised me with this stunning ring for our anniversary, and I'm completely in love! The radiant cut moissanite looks so elegant and sits beautifully on my finger. The sparkle is unreal, even in direct sunlight.
N
Un design d'une élégance rare ! La finesse de l'anneau en or met magnifiquement en valeur cette superbe pierre rectangulaire. C'est l'incarnation du luxe discret. La moissanite brille intensément et la qualité est irréprochable. Idéal pour un style chic au quotidien.
S
A beautiful, high-quality piece that goes with everything. The classic radiant cut combined with the simple band gives it a timeless appeal. It's lightweight and super comfortable to wear.
C
Wunderschöner Ring! Der Radiant-Schliff ist perfekt ausgearbeitet und funkelt fantastisch im Licht. Der schmale Goldreif wirkt sehr edel und stört überhaupt nicht im Alltag. Die Verarbeitung ist absolut hochwertig. Ein zeitloser Klassiker, den ich jeden Tag trage.
J
This ring looks so expensive! The stone catches the light beautifully and has incredible sparkle. The craftsmanship is wonderful, and it sits perfectly on my finger. Highly recommend!
R
I am highly impressed with the quality. The stone clarity is exceptional and has so much fire under the sun. The thin band is incredibly comfortable and doesn't feel bulky at all. It gives off an effortless "old money" vibe without breaking the bank. Beautifully crafted!
N
I was looking for a classic piece, and this exceeded my expectations. The simple band pairs beautifully with the large, brilliant center stone. It feels sophisticated, high-quality, and perfect for everyday elegance.
A
Splendid! The radiant cut of this moissanite has an incredible brilliance, it looks like a top-tier diamond. The gold setting is thin, minimalist and very refined. It gives a great presence on the hand while remaining fine and elegant. Very satisfied with the purchase!
- Valg af et valg resulterer i en helsideopdatering.