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Highlights & Features
Our design focuses on the purity of light. By elevating the majestic oval cut on a nearly invisible pave band, we’ve created an effect of floating brilliance. It’s a minimalist tribute to maximal sparkle, engineered to draw all attention to the center stone’s breathtaking, uninterrupted glow.
Specifications
| Center Stone | Premium Stdiam™ (D/VVS1) |
| Cut Grade | Excellent (3EX) Hearts & Arrows |
| Metal Options | 18K White Gold Vermeil 18K Yellow Gold Vermeil Solid 10K White Gold Solid 10K Yellow Gold |
| Band Width | 1.5mm (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.
E
Amazing ring!
A
Stunning ring my girlfriend absolutely loved it.
M
Beautiful! It looks amazing and has not gone dull in the months I’ve worn it! I get so many compliments on it.
m
This is our first Moissanite ring and we were surprised how real this looks. From the 18k gold plated band, to the mini stones to the actual stone. In the photo below you can see the brilliance compared to my wife’s diamond ring. If I didn’t know I would think it was a real diamond.
Y
I think it is reasonably priced, with its sublime beauty and great presentation. I simply love it, and I do recommend this ring.
G
I am absolutely in love with this ring! From the moment I opened the box, I was blown away by how much it sparkles. The oval moissanite catches the light beautifully from every angle, it looks just like a high-quality diamond and has that elegant, timeless look. I’ve received so many compliments already!
C
The setting feels secure, and the 18K gold plating over sterling silver gives it a high-end look while still being affordable. I’ve worn it daily, and it’s been comfortable and lightweight on my finger. So far, the finish has held up really well with no tarnishing or fading.
M
I love this ring!! It looks great in any lighting. The 2.00 carat was a great size for my small finger.
E
Just buy it! You won't be sorry!!
L
I love love love this ring. It looks so real! It fit perfectly and unless you’re an expert you really can’t tell it isn’t real. The price was great as well. Would be perfect for someone on a budget, or if you want to buy a cheaper ring to wear on vacation or something so not to risk something happening to your real ring, this would make a perfect backup ring. The price makes it easy to replace, or perfect for someone wanting to get married but on a budget. It looks so real, it would be a perfect engagement ring to propose with!
Y
Absolutely beautiful!
K
It looks a lot smaller in real life than it did on the website, Definitely does NOT look like a 1 carat ring.
Thank you for sharing your feedback, Karen. We're sorry the ring appeared smaller than you expected. Our 1ct oval moissanite measures 5 × 7mm, with a design focused on delicate proportions rather than an oversized appearance. We appreciate your feedback and will continue working to make our product imagery and sizing information as clear as possible.
K
Our ring arrived in excellent condition. . It is so beautiful. . I’ve received many compliments on it. . Very happy with our purchase. . Highly recommend Stdiam. .
P
This ring is very beautiful, but it runs half a size large. It feels a bit loose when worn, though it's not a major issue.
T
So sparkly in person! Recently I dropped my real band under a vanity and have yet to be able to retrieve it. My hand has been sad so my hubby bought this little sparkler to bridge the gap! A beautiful faux diamond for vacations or when you want to switch it up!
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