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Serene Round Lab Grown Diamond Three-Stone Engagement Ring
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The Signora Promise
Hand-finished in SuratMade to order
Reports where statedExact scope shown
Insured deliverySigned & tracked
Secure checkoutShopify checkout
Standard-design returns30-day eligibility
Final inspectionChecked before dispatch
About This Ring
Round Brilliant · Three Stone
Center
Round Brilliant
Metal
CustomizableSetting
Three Stone
An independent IGI grading report is included when the selected individual lab-grown center or primary diamond is 0.50 ct or larger.
| Detail | In the Photos | Customizable |
|---|---|---|
| Center Diamond | Round Brilliant · Approx. 5.10 mm · Approx. 0.50 ct (Reference Model) | 1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct, 4.5 ct |
| Side Diamonds | 2 Round Brilliant Lab Grown Diamonds · Approx. 0.24 ct Total | Scaled to match the selected center diamond |
| Total Diamond Weight | Approx. 0.74 ct (Reference Model) | Varies with selected center diamond |
| Stone Type | Lab Grown Diamond | — |
| Setting | Three-Stone Cathedral Basket Setting with Flowing Bypass Shank | — |
| Finish | High Polish | — |
| Occasion | Engagement · Anniversary · Bridal | — |
At a glance
A round lab grown diamond three-stone engagement ring from Signora Jewels.
The reference ring shown features a 5.10 mm round brilliant lab grown diamond weighing approximately 0.50 ct. Two round brilliant side diamonds totaling approximately 0.24 ct complete the elegant three-stone design. Your ring is custom made with your selected center diamond size from 1 ct to 4.5 ct.
Made to order in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum.
Select your preferred center diamond size and precious metal using the options on this page.
The round brilliant center diamond is elevated within a cathedral basket that allows generous light to enter through the open gallery, enhancing brilliance from every viewing angle. Smooth bypass shoulders sweep naturally toward the center, creating graceful movement while maintaining a timeless three-stone profile.
Matching round brilliant side diamonds add balanced sparkle and proportion to the center stone without overwhelming it. The polished comfort shank gives the ring a refined appearance that transitions effortlessly from everyday wear to formal occasions. Signora Jewels handcrafts every ring to order in your selected precious metal.
Design Highlights
- Customizable round lab grown diamond from 1 ct to 4.5 ct
- Classic three-stone design
- Flowing bypass shank
- Cathedral basket setting
- Open gallery construction
- High polish finish
Browse our Three-Stone Engagement Rings, explore the Engagement Ring Guide, or compare precious metals using our Metal Guide.
Diamond Details
| Specification | Details |
|---|---|
| Reference Center Diamond | Round Brilliant · Approx. 5.10 mm · Approx. 0.50 ct |
| Side Diamonds | 2 Round Brilliant · Approx. 0.24 ct Total |
| Total Stones | 3 |
| Reference Total Diamond Weight | Approx. 0.74 ct |
| Available Center Sizes | 1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct and 4.5 ct |
| Finish | High Polish |
The measurements shown are for the photographed reference model. Final dimensions vary according to the selected center diamond size.
About Lab Grown Diamonds
The round brilliant cut delivers exceptional brilliance and balanced proportions. Combined with matching round side diamonds and an elegant bypass profile, this design offers a timeless three-stone engagement ring with graceful symmetry.
Metal, Care & Fit
Available in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum. Clean beneath the cathedral basket and around the side diamonds with warm water, mild soap and a soft brush to keep every diamond bright.
FAQ
Can I customize the center diamond?
Yes. This design is available with center diamond sizes from 1 ct to 4.5 ct.
Do the side diamonds change with larger center stones?
Yes. The side diamonds are proportionally scaled to maintain the balance of the three-stone design.
Why is the center mounted in a cathedral basket?
The cathedral basket provides excellent support while allowing more light to enter through the open gallery for added brilliance.
Is this ring comfortable for everyday wear?
Yes. The flowing bypass shank and polished comfort profile are designed for lasting daily comfort while showcasing the center diamond.
Common questions
Ring questions, answered
Timing, shipping, certification and return eligibility for made-to-order rings.
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Answers last updated August 2, 2026
When will my order ship?
Standard listed pieces are made to order with an estimated dispatch of 7 business days. Use the product-page estimate when it is more specific and the timing confirmed after ordering. Delivery timing begins after dispatch and varies by destination and carrier service. Fully custom commissions follow the production schedule confirmed with their approved specifications or CAD.
When is insured worldwide delivery free?
Orders of US$500 or more receive free express, insured and tracked worldwide delivery. Below US$500, express, insured and tracked worldwide delivery is charged at the fixed rate shown at checkout.
Will I have to pay import duties?
For every destination available at checkout, Signora prepays applicable import duties and import taxes. Customers should not be asked to pay those import charges again on delivery.
What certificate comes with my jewelry?
Every finished piece includes a Signora Jewelry Certificate. Each selected individual lab-grown center or primary diamond of 0.50 ct or above includes an IGI grading report. Below 0.50 ct, IGI can be arranged by custom request. Custom moissanite and gemstone selections include GRA documentation, with the exact scope confirmed in the approved specifications. The product page or approved specifications state the exact laboratory, report type and scope.
Can I return a made-to-order listed design?
Standard listed products are eligible for return within 30 days after carrier-recorded delivery when unworn, unused and in their original condition, with the original packaging and included documents. Normal listed choices such as metal, stone carat, chain or bracelet length, an extended ring size, or complimentary engraving do not by themselves make an item Final Sale. A sale or discount also does not imply Final Sale; only an item explicitly classified as Final Sale follows the non-returnable exclusion.
How are fully custom orders handled?
A fully custom commission is different from a listed made-to-order design. After its specifications or CAD are approved, a normal change-of-mind return does not apply. Manufacturing defects remain reviewable. Signora may accept an exceptional non-defect return case by case; documented labor and genuinely non-recoverable costs may be deducted, but these deductions are not a restocking fee.