DESIGNED WITH INTENTION
Every STDIAM ring begins with thoughtful proportions and refined details. From the graceful curve of the band to the height of the setting, we focus on balance, comfort, and timeless elegance.


















Every order plants 1 real tree via Tree-Nation.
Defined by its architectural elegance, the Elmira features an Asscher-cut lab-grown diamond with distinctive cropped corners and precisely arranged step-cut facets. Its balanced square silhouette reveals a captivating hall-of-mirrors effect, creating depth and a subtle interplay of light. Elevated in a refined solitaire setting above a slender polished band, Elmira brings together Art Deco-inspired geometry and contemporary minimalism in a quietly sophisticated design.
| DIAMOND DETAILS | |
| Center Diamond | Asscher-Cut Lab-Grown Diamond |
| Cut Style | Asscher Step Cut |
| Colour & Clarity | E–F (Colorless) / VVS1–VVS2 |
| Carat Weight | As Selected |
| Diamond Finish |
Excellent Polish & Symmetry No Fluorescence |
| Proportions | L/W Ratio: 1.00–1.05 |
| Certification |
IGI or GIA Grading Report For center diamonds over 0.50 ct. |
| SETTING & MATERIALS | |
| Metal Options | Solid 10K / 14K Gold (White or Yellow) |
| Setting Type | High-Set Prong Solitaire |
| Band Width | 1.8 mm |
| Skin-Friendly | Lead-Free & Nickel-Free |
| Packaging | Signature Walnut Wood Box |
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 the fit isn’t quite right, we offer ONE FREE RESIZING within 60 days of delivery for lab-grown diamond rings. Shipping costs are the customer’s responsibility.
Lifetime Stone Guarantee
Your center Gemstone 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.
Every STDIAM ring arrives in our signature walnut wood box, complemented by a deep green velvet interior. A refined presentation designed to make every detail feel special.
Your ring arrives in our signature walnut wood jewelry box, featuring a soft deep green velvet interior. Beautifully presented and ready for gifting.
Lab-grown diamond center stones over 0.50 carat are accompanied by an individual IGI or GIA grading report, detailing the diamond's characteristics.
One complimentary resizing is available within 60 days of delivery, where the ring design permits. Customers are responsible for shipping costs both ways. All diamond purchases are final sale and cannot be returned or exchanged.
Found a design you love, but wish to make it your own? From diamond shapes and precious metals to the finer details of your setting, we offer personalized design options to help bring your vision to life.
DISCUSS YOUR DESIGN
Every STDIAM ring begins with thoughtful proportions and refined details. From the graceful curve of the band to the height of the setting, we focus on balance, comfort, and timeless elegance.
Every STDIAM lab-grown diamond is carefully selected with attention to its proportions, balance, and natural play of light. A thoughtful approach to exceptional brilliance and enduring beauty.
Every STDIAM purchase gives back. Through our partnership with Tree-Nation, we fund the planting of one tree with every order, turning a meaningful purchase into something that grows beyond it.