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Coffin Cut Lab Grown Diamond Vintage 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
Cut · Halo
Center
Cut
Carat
1 ct
CustomizableMetal
CustomizableSetting
Halo
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 | Coffin Cut · 11.20 × 6.80 mm · Approx. 2.00 ct | 1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct, 4.5 ct |
| Cluster Diamonds | 20 Round Brilliant + 6 Marquise · Approx. 0.26 ct | Scaled to suit the selected center size |
| Total Diamond Weight | Approx. 2.26 ct | Varies with selected center size |
| Stone Type | Lab Grown Diamond | — |
| Setting | Four-Prong Cathedral Basket with Half Halo & Marquise Cluster | — |
| Finish · Occasion | High Polish · Engagement, Anniversary, Bridal | — |
At a glance
A coffin cut lab grown diamond vintage engagement ring from Signora Jewels.
The ring shown features an 11.20 × 6.80 mm coffin cut lab grown diamond weighing approximately 2.00 ct. Twenty round brilliant diamonds and six marquise diamonds create a decorative half halo totaling approximately 0.26 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 coffin cut center is held in a four-prong cathedral basket that leaves the dramatic silhouette fully visible while allowing light to enter through the open gallery beneath. The elongated shape and angular outline give the ring a bold vintage character unlike traditional diamond cuts.
A decorative half halo rises above the center with marquise and round brilliant diamonds arranged in a crown-like cluster. The marquise accents introduce graceful points while the round diamonds soften the outline, creating a balanced contrast that frames the center without covering it. Signora Jewels crafts every ring to order in your selected precious metal and center diamond size.
Design Highlights
- Customizable coffin cut lab grown diamond from 1 ct to 4.5 ct
- Four-prong cathedral basket
- Vintage-inspired half halo design
- Six marquise accent diamonds
- Twenty round brilliant accent diamonds
- High polish finish
Browse more Vintage Engagement Rings, explore our Engagement Ring Guide, or compare precious metals using our Metal Guide.
Diamond & Ring Details
| Specification | Details |
|---|---|
| Center Diamond | Coffin Cut · 11.20 × 6.80 mm · Approx. 2.00 ct (shown) |
| Round Accent Diamonds | 20 Stones · Approx. 0.11 ct |
| Marquise Accent Diamonds | 6 Stones · Approx. 0.15 ct |
| Total Stones | 27 |
| Total Diamond Weight | Approx. 2.26 ct |
| Center Diamond 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. Final dimensions vary according to the selected center diamond size.
About Lab Grown Diamonds
The coffin cut combines elongated geometry with bold angular edges for a distinctive vintage-inspired appearance. The decorative marquise and round diamond cluster creates a crown-like frame that highlights the unique outline while preserving the center as the focal point.
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 marquise cluster using warm water, mild soap and a soft brush to maintain brilliance and keep the detailed setting free from residue.
FAQ
What makes a coffin cut different from other diamond shapes?
The coffin cut features tapered sides and angular ends, creating a bold geometric outline with a distinctive vintage-inspired appearance.
Can I choose a different center diamond size?
Yes. This design is available with center diamond options from 1 ct through 4.5 ct while maintaining the same vintage-inspired styling.
Why are marquise diamonds used in the half halo?
Their elongated points create a crown-like frame around the center, adding height and contrast without covering the coffin cut outline.
Is the cathedral basket suitable for everyday wear?
Yes. The cathedral shoulders reinforce the basket while the polished comfort shank provides a balanced fit for daily wear.
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.