A beautiful beginning
Your cart is empty
Begin with one of our most-loved collections and find a piece made for you.
Shop best sellers- Made to order in Surat
- Insured worldwide delivery
- Secure Shopify checkout
Phantom Coffin Lab Grown Diamond Split Shank Engagement Ring
1 of 8
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 · Pavé
Center
Cut
Carat
1 ct
CustomizableMetal
CustomizableSetting
Pavé
An independent IGI grading report is included when the selected individual lab-grown center or primary diamond is 0.50 ct or larger.
| Detail | Reference Design | Customizable |
|---|---|---|
| Center Diamond | Coffin Cut Lab Grown Diamond · 11.00 × 6.80 mm · Approx. 2.00 ct (Reference) | 1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct, 4.5 ct |
| Accent Diamonds | 40 Round Brilliant Lab Grown Diamonds · Approx. 0.23 ct Total | Scaled proportionally with the selected center diamond |
| Total Diamond Weight | Approx. 2.23 ct (Reference) | Varies with the selected center diamond |
| Stone Type | Lab Grown Diamond | — |
| Setting | Four-Prong Cathedral Basket with Double Row Split Shank Pavé | — |
| Finish | High Polish | — |
| Occasion | Engagement · Anniversary · Statement | — |
At a glance
A coffin cut lab grown diamond engagement ring from Signora Jewels.
The reference design features an approximately 2.00 ct coffin cut lab grown diamond surrounded by forty round brilliant lab grown accent diamonds totaling approximately 0.23 ct. The reference total diamond weight is approximately 2.23 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 elongated coffin cut center diamond is elevated in a four-prong cathedral basket that allows generous light through the open gallery while emphasizing the dramatic geometry of the stone. The distinctive silhouette creates a bold focal point with striking finger coverage.
Double rows of pavé-set lab grown diamonds sweep along the split shank before meeting beneath the center, adding continuous brilliance from every angle. Pavé accents beneath the gallery complete the design with additional sparkle while maintaining a clean architectural profile. Every ring is handcrafted to order by Signora Jewels.
Design Highlights
- Customizable coffin cut lab grown diamond from 1 ct to 4.5 ct
- Double row pavé split shank
- Forty round brilliant accent diamonds
- Four-prong cathedral basket
- Hidden gallery pavé accents
- High polish finish
Browse our Engagement Rings, explore the Engagement Ring Guide, or compare precious metals in our Metal Guide.
Diamond Details
| Specification | Details |
|---|---|
| Reference Center Diamond | Coffin Cut Lab Grown Diamond · 11.00 × 6.80 mm · Approx. 2.00 ct |
| Split Shank Pavé Diamonds | 32 Round Brilliant · Approx. 0.19 ct Total |
| Gallery Accent Diamonds | 8 Round Brilliant · Approx. 0.04 ct Total |
| Total Stones | 41 |
| Reference Total Diamond Weight | Approx. 2.23 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 |
The measurements shown represent the photographed reference model. Final proportions vary according to the selected center diamond.
About Lab Grown Diamonds
The coffin cut offers bold geometric lines with contemporary character, while the double pavé split shank amplifies brilliance without competing with the center stone. Together they create a striking engagement ring with modern architectural styling.
Metal, Care & Fit
Available in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum. Clean beneath the cathedral basket and between the split shank using warm water, mild soap and a soft brush to maintain the brilliance of every lab grown diamond.
FAQ
Why does this ring use a split shank?
The split shank visually balances the elongated coffin cut center while adding additional surface for pavé-set diamonds.
Can I customize the center diamond?
Yes. This design is available with center diamond sizes from 1 ct through 4.5 ct.
What do the gallery diamonds add?
The hidden gallery diamonds introduce subtle sparkle beneath the center stone that becomes visible from side angles.
Is this design comfortable for daily wear?
Yes. The cathedral basket and balanced split shank are designed to provide secure support and comfortable everyday wear.
Common questions
Ring questions, answered
Timing, shipping, certification and return eligibility for made-to-order rings.
Still deciding?
Talk to a Signora jeweler — free, and no obligation.
Book a consultation →
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.