Coffin Cut Lab Grown Diamond Geometric Pavé Halo Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

Coffin cut lab grown diamond halo engagement ring in white gold with four center prongs, geometric halo and pavé shoulders

1 of 8

$673.00

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

Arrives 7 business days to make, then 5–8 insured & tracked.

30-day returns Courier, insurance & duties covered. No restocking fee.

Duties & taxesPrepaid at checkout. Nothing extra to pay on delivery.

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.

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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

Customizable

Metal

Customizable

Setting

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	Details
Center diamond	Coffin Cut · approx. 8.5 × 6.0 mm · 1.50 ct
Halo diamonds	Round Brilliant · approx. 22–24 stones · 0.15 ct
Shoulder diamonds	Round Brilliant · approx. 16–20 stones · 0.10 ct
Total diamond weight	Approx. 1.75 ct · 39–45 stones
Stone type	Lab Grown Diamond
Setting	Halo with geometric pavé border and four visible center prongs
Band	Pavé shoulders · approx. 1.60 mm wide and 1.80 mm thick at base
Setting height	Approx. 6.5–7.0 mm
Finish · Occasion	High Polish · Engagement

Diamond details

Diamond	Quantity	Carat weight
Coffin Cut center	1	1.50 ct
Round halo diamonds	Approx. 22–24	0.15 ct total
Round shoulder diamonds	Approx. 16–20	0.10 ct total
Total accent diamonds	Approx. 38–44	0.25 ct
Grand total	Approx. 39–45	1.75 ct

At a glance

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

One 1.50 ct coffin-cut center measuring approximately 8.5 × 6.0 mm, surrounded by 0.15 ct of round halo diamonds and 0.10 ct of shoulder diamonds. Approximately 1.75 ct total.

Made to order in 11 metals: silver, 10K/14K/18K gold in yellow, white and rose, plus platinum.

Four visible center prongs, an angular pavé halo and diamond-set shoulders. Estimated 18K finished metal weight: 3.05 g.

Signora Jewels sets an elongated 1.50 ct coffin-cut diamond inside a geometric halo that follows its angled shoulders and clipped outline. Four rounded prongs secure the center, leaving its long facets visible between the metal contacts.

Approximately 22–24 round diamonds form the halo, with another 16–20 continuing down the shoulders. The 0.25 ct of accents creates a close border around the center without changing its distinctive outline.

At the base, the band narrows to approximately 1.60 mm. The raised setting measures an estimated 6.5–7.0 mm high, giving the geometric head clearance above the diamond-set shoulders.

Design highlights

1.50 ct elongated coffin-cut center measuring approximately 8.5 × 6.0 mm
Geometric pavé halo following the center's angular outline
Four visible rounded center prongs
Approximately 22–24 round halo diamonds totaling 0.15 ct
Approximately 16–20 round shoulder diamonds totaling 0.10 ct
Approximately 1.75 ct total diamond weight

Explore our engagement rings, learn about different facets in the diamond stone guide, or see our jewelry care guide for maintaining the small pavé settings.

FAQ

What makes the halo different from a traditional round halo?
The halo follows the coffin-cut center's angular outline, including its sloping upper sides and narrower lower corners. Approximately 22–24 round diamonds create this geometric border.

How is the coffin-cut center secured?
Four rounded prongs are visible around the 1.50 ct center, with two near its upper sides and two near the lower sides. The diamond's faceted top remains exposed between them.

How much of the ring's diamond weight comes from the accents?
The accents total approximately 0.25 ct: 0.15 ct in the halo and 0.10 ct along the shoulders. Together with the 1.50 ct center, the ring totals approximately 1.75 ct.

Can a straight wedding band sit flush beside this ring?
The halo rises approximately 6.5–7.0 mm above the reference design, while the shoulders measure approximately 1.75–1.90 mm wide. A flush fit depends on the finished gallery clearance, so compare the two rings before pairing them.

How should I clean the geometric halo and pavé shoulders?
Use warm water, mild soap and a soft brush around the halo corners and between the shoulder diamonds. Rinse thoroughly and pat dry without pulling fabric through the small prongs.

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