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Lozenge Lab Grown Diamond Three Stone Engagement Ring
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The Signora Promise
Hand-finished in SuratMade to order
IGI Report IncludedExact scope shown
Insured deliverySigned & tracked
Secure checkoutShopify checkout
Standard-design returns30-day eligibility
Final inspectionChecked before dispatch
About This Ring
Cut · Three Stone
Center
Cut
Carat
1 ct
CustomizableMetal
CustomizableSetting
Three Stone
An independent IGI grading report is included when the selected individual lab-grown center diamond is 1.00 ct or larger. Its report number is laser-inscribed on that report-bearing center diamond. Accent and side diamonds are matched and inspected to Signora Standards and are not individually laboratory graded.
| Detail | In the photos | Customizable |
|---|---|---|
| Center diamond | Lozenge Step Cut · 11.25 × 7.30 × 4.01 mm · approx. 1.50 ct | 1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct, 4.5 ct |
| Side diamonds | 2 Lozenge Step Cut · 4.50 × 3.00 mm · approx. 0.36 ct total | Scale with center |
| Total diamond weight | Approx. 1.86 ct | Varies with center size |
| Stone type | Lab Grown Diamond | — |
| Setting | Four Double-Claw Open Basket Three-Stone Setting | — |
| Finish · Occasion | High Polish · Engagement, Anniversary, Bridal | — |
At a glance
A lozenge lab grown diamond three stone engagement ring from Signora Jewels.
An approximately 1.50 ct lozenge step cut diamond measuring 11.25 × 7.30 × 4.01 mm is framed by two matching lozenge step cut side diamonds totaling approximately 0.36 ct. Approx. 1.86 ct total.
Made to order in 11 metals: Silver, 9K/14K/18K Gold (Yellow, White and Rose) and Platinum.
Each metal color is shown in the photos. Choose your preferred center diamond weight and metal from the options on this page.
The elongated lozenge center is matched with two smaller lozenge step cut diamonds that continue the same geometric profile across the finger. At Signora Jewels, each stone is secured by double-claw prongs within an open basket, allowing the clean step facets to remain visible while creating a balanced three-stone arrangement.
The approximately 2.00 mm comfort-fit shank tapers naturally toward the center without distracting from the three matching diamonds. With an approximate setting height of 6.90 mm, the open gallery allows light beneath each stone while maintaining a refined side profile that feels comfortable for everyday wear.
Browse our engagement rings, compare unique diamond shapes in the diamond stone guide, or explore precious metal options in our metal guide.
Design highlights
- Lozenge step cut center shown at approximately 1.50 ct
- Customizable center diamond from 1 ct to 4.5 ct
- Matching lozenge step cut side diamonds totaling approximately 0.36 ct
- Four double-claw open basket three-stone setting
- Tapered comfort-fit shank approximately 2.00 mm wide
- Made to order in 11 precious metal options
The three matching lozenge diamonds create uninterrupted geometric symmetry across the ring. Instead of contrasting shapes, the repeated step-cut pattern produces broad mirror-like reflections that remain consistent from one stone to the next.
Diamond & Ring Details
| Specification | Details |
|---|---|
| Center stone | Lozenge Step Cut · 11.25 × 7.30 × 4.01 mm · approx. 1.50 ct (shown) |
| Side diamonds | 2 Lozenge Step Cut · 4.50 × 3.00 mm · approx. 0.36 ct total |
| Total weight / count | Approx. 1.86 ct · 3 Diamonds |
| Setting | Four Double-Claw Open Basket Three-Stone Setting |
| Center options | 1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct and 4.5 ct |
| Finish | High Polish |
Measurements are approximate. Your selected center diamond weight determines the final proportions of the finished ring.
About Lab Grown Diamonds
The lozenge step cut combines an elongated geometric outline with broad parallel facets that create bold mirror-like reflections. Every center and side diamond is F color, VS1 clarity and , selected to maintain balanced proportions throughout the three-stone design.
Metal, Care & Fit
Available in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum. Clean beneath the open baskets using warm water, mild soap and a soft brush to remove everyday buildup. Check the double-claw prongs periodically to ensure every point remains securely protected.
FAQ
Why are all three diamonds the same lozenge shape?
Using matching lozenge step cut diamonds creates uninterrupted symmetry across the ring. The repeated geometry gives the design a distinctive architectural appearance rather than contrasting different shapes.
What do the double-claw prongs add?
Each lozenge diamond is secured with fine double-claw prongs that define the pointed ends while providing additional support at the corners.
Can this ring be worn with a wedding band?
Yes. The raised open basket allows many straight wedding bands to sit close, while contoured bands follow the three-stone profile more precisely.
Which metal color best complements this design?
White gold and platinum emphasize the crisp geometric lines of the step-cut diamonds, while yellow and rose gold create warm contrast around the elongated lozenge shapes.
Common questions
Ring questions, answered
Timing, shipping, certification and return eligibility for made-to-order rings.
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Answers last updated July 31, 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 express shipping free?
The configured free-shipping reference is orders over $500 USD. Eligibility, any currency equivalent, the available service and the final shipping charge are determined by the cart and Shopify checkout for your destination and order total before payment.
Will I have to pay import duties?
Duties and applicable import taxes are prepaid by Signora for deliveries to the US, UK and Canada. You should not be asked to pay them again on delivery.
What certificate comes with my jewelry?
Every finished Signora jewelry product includes a Signora Jewelry Certificate. Any independent stone report included with the selected configuration is shown in the product details and order record.
Can I return a made-to-order listed design?
Standard listed products are eligible for return within 30 days of 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 are still handled, and Signora will review any exceptional circumstances with the customer.