Coffin Cut Lab Grown Diamond Bezel Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

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$863.00

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Independently graded by IGI IGI Report Included Selected 0.50 ct+ lab-grown center or primary diamond · IGI grading report · Signora Jewelry Certificate included. 1 ct lab-grown diamond · IGI report · Signora Certificate included.

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Center Diamond:

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Complimentary · hand-engraved to order · adds about 3–4 days.

Estimated dispatch: 7 business days Duties & taxes prepaid

Ring size guide

Lay a ring you own flat on the circle and slide until it sits just inside it — or set its inner diameter directly.

Measure the inside of a ring that already fits — inner edge to edge — with a ruler in mm, then set it below. No ring handy? Try Measure your finger.

14 mm 24 mm 17.3 mm

Inner diameter mm

US size

UK size

EU size

Circumference

54.3 mm

Between sizes? Always choose the larger size. Fingers are slightly bigger in the evening — measure then for the best fit.

Method 1 — Use an existing ring

Find a ring that fits the intended finger comfortably.
Place it flat and measure the inner diameter (inside edge to inside edge) in mm.
Enter that measurement in the Measure a ring tab.

Method 2 — Wrap and measure

Wrap a thin strip of paper around the base of your finger.
Mark where it overlaps — measure that length in mm (your circumference).
Divide by 3.1416 (π) to get your diameter, then use the Measure a ring tab.

Tip: Middle finger sizes typically run half a size larger than the ring finger. If between sizes, go up. Measure in the evening — fingers are slightly larger then.

7US size

US	UK	EU	Diameter	Circumference

Highlighted row = your converted size. Most common women's sizes are US 6–7. All measurements in mm.

Selected: —

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 · Bezel

Center

Cut

Carat

1 ct

Customizable

Metal

Customizable

Setting

Bezel

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 · 10.5 × 6.5 mm · approx. 2.00 ct	1–4.5 ct
Accent diamonds	None	None
Total diamond weight	approx. 2.00 ct · 1 stone	Varies with selected center
Stone type	Lab Grown Diamond	—
Setting	Bezel	Scales with center
Band	Plain polished shank with cathedral support	—
Finish · Occasion	High Polish · Engagement, Anniversary, Bridal	—

At a glance

A coffin cut lab grown diamond bezel engagement ring from Signora Jewels.

The photographed design carries a 2.00 ct coffin cut measuring approximately 10.5 × 6.5 mm, enclosed by a full geometric bezel with no accent diamonds. Approx. 2.00 ct total.

Made to order in 11 metals: silver, 9K/14K/18K gold (yellow, white, rose) and platinum.

Each metal color is shown in the photos. Choose a 1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct or 4.5 ct center and your preferred metal from the options on this page.

Signora Jewels follows the 10.5 × 6.5 mm coffin cut with a complete rim of metal rather than breaking its outline with prongs. At the photographed 2.00 ct weight, the bezel traces the clipped upper corners, long tapered sides and narrow lower edge of the diamond.

The rest of the ring stays deliberately plain. Cathedral supports rise from shoulders measuring approximately 2.30 mm, meeting the bezel without adding side stones or decorative metalwork. The lower shank is about 2.20 mm wide and 1.85 mm thick, while the reference setting reaches approximately 6.30 mm high.

Design highlights

Coffin cut center options: 1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct or 4.5 ct
2.00 ct reference center measuring approximately 10.5 × 6.5 mm
Full geometric bezel surrounding the entire diamond perimeter
No accent diamonds or pavé along the shank
Cathedral-supported shoulders measuring approximately 2.30 mm
Approx. 6.30 mm reference setting height with a 2.20 mm lower band

The bezel makes the unusual outline impossible to miss. Its polished border repeats every change of direction in the coffin cut, while the undecorated shank leaves nothing beside the center to compete with that geometry. Explore more engagement rings, compare unusual cuts in the diamond stone guide, or review the available choices in the metal guide.

Diamond & Ring Details

Specification	Details
Center stone	Coffin · 10.5 × 6.5 mm · approx. 2.00 ct in the photographed design
Accent stones	None
Total weight / count	approx. 2.00 ct · 1 stone in the photographed design
Setting	Bezel
Band	Plain polished shank with cathedral support
Band details	Approx. 2.20 mm lower width · 1.85 mm lower thickness · 2.30 mm shoulder width
Setting height	Approx. 6.30 mm at the 2.00 ct reference weight
Center options	1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct, 4.5 ct
Finish	High Polish

Measurements are approximate. The selected center weight determines the final diamond dimensions, bezel proportions and total diamond weight.

About Lab Grown Diamonds

The coffin cut reference center measures approximately 10.5 × 6.5 mm at 2.00 ct. Its clipped upper corners, long angled sides and narrower base create a distinctly geometric outline. The full bezel follows those edges closely instead of placing prongs over them.

Metal, Care & Fit

The reference construction uses approximately 5.40 g of 18K gold before the diamond is set. Yellow and rose gold create a strong border around the white center, while white gold and platinum make the bezel visually recede toward the diamond. Clean around the underside of the setting with warm water, mild soap and a soft brush.

FAQ

How does the full bezel protect this coffin cut?
The bezel surrounds the complete perimeter of the diamond with metal. That gives the angular 10.5 × 6.5 mm reference center a continuous protective edge instead of leaving corners between exposed prongs.

Does this ring have any side or accent diamonds?
No. The photographed design contains one 2.00 ct center diamond and no accent stones, leaving the polished bezel and plain shank completely free of pavé.

How high does the 2 ct reference setting sit?
The photographed construction is approximately 6.30 mm high. Cathedral supports rise from the shoulders into the bezel, keeping the center connected to the shank from both sides.

How wide is the band?
The lower shank measures approximately 2.20 mm wide and 1.85 mm thick, with shoulders of approximately 2.30 mm near the setting. The nearly consistent width keeps attention on the geometric center.

Which metal gives the coffin outline the strongest contrast?
Yellow and rose gold create the clearest visible border around the white diamond. White gold and platinum keep the bezel closer in tone to the center while preserving the same angular outline.

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