Marquise Cut Lab Grown Diamond Cathedral Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

1 of 9

$758.00

Price updates with your selections

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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Ring size Choose one

Forever, A & J

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Engraving 0 / 20

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

For ChristmasOrder by Monday 30 November for delivery before 25 December. Holiday gift guide

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.

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

Marquise Cut · Cathedral

Center

Marquise Cut

Carat

1 ct

Customizable

Metal

Customizable

Setting

Cathedral

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	Marquise Cut · 13.43 × 6.57 mm · approx. 2.00 ct	1–4.5 ct
Accent diamonds	Round side diamonds · approx. 0.15 ct total	Scales with center
Total diamond weight	approx. 2.15 ct	Varies with selected center
Stone type	Lab Grown Diamond	—
Setting	Cathedral with Tulip Basket and floral milgrain shoulders	—
Finish · Occasion	High Polish · Engagement, Anniversary	—

Diamond details

Shape	Role	Weight (approx.)
Marquise Cut	Center · 13.43 × 6.57 mm	2.00 ct
Round Cut	Side-stone clusters	0.15 ct total
Total	Center + accents	2.15 ct

At a glance

A marquise lab grown diamond cathedral engagement ring from Signora Jewels.

A 2.00 ct, 13.43 × 6.57 mm marquise center rises above round side diamonds totaling approx. 0.15 ct. Approx. 2.15 ct total.

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

Choose your center weight and metal for this made-to-order ring.

Signora Jewels sets the 13.43 × 6.57 mm marquise above rising cathedral shoulders, with round side diamonds gathered close to the center before the band turns into engraved floral metalwork. Fine milgrain edging follows the upper shank instead of covering it with a continuous diamond row.

The basket rises approximately 7.0–7.5 mm. At the base, the shank measures about 1.80 mm wide and 1.80 mm thick, while the decorated shoulder area widens to roughly 3.0–3.5 mm beside the center.

Design highlights

2.00 ct marquise center in the reference design
Center measures approx. 13.43 × 6.57 mm
Round side diamonds totaling approx. 0.15 ct
Cathedral shoulders rising toward the center
Tulip Basket with floral engraving and milgrain detailing
Center customizable from 1 ct to 4.5 ct

The round accents stop before the engraved shank takes over. That leaves a clear change from diamond sparkle near the marquise to carved roses and scrollwork farther down the shoulders, giving the ring detail without crowding the elongated center.

Diamond & Ring Details

Specification	Details
Center stone	Marquise Cut · 13.43 × 6.57 mm · approx. 2.00 ct in the photos
Accent diamonds	Round side diamonds · approx. 0.15 ct total
Total diamond weight	approx. 2.15 ct in the photographed configuration
Setting	Cathedral with Tulip Basket and floral milgrain shoulders
Center options	1, 1.5, 2, 2.5, 3, 3.5, 4 and 4.5 ct
Finish	High Polish

Measurements are approximate; your selected center weight sets the final diamond dimensions and total weight.

About Lab Grown Diamonds

The 13.43 mm reference marquise carries its visual spread along the finger, while the round side stones add shorter flashes at its widest point. Read more about elongated cuts in the diamond stone guide.

Metal, Care & Fit

Yellow and rose gold make the rose engraving and milgrain borders easier to read, while white gold and platinum keep more attention on the diamonds. Compare options in the metal guide. Clean around the side stones, underneath the basket and through the engraved recesses with warm water, mild soap and a soft brush.

FAQ

How much accent diamond weight sits beside the marquise?
The round side diamonds total approximately 0.15 ct. They stay concentrated close to the center rather than continuing as a full pavé band.

What do the cathedral shoulders do on this design?
The shoulders rise toward the center setting instead of remaining level with the lower shank. That gives the long marquise visual support while leaving the engraved band visible.

How high does the center sit?
The setting rises approximately 7.0–7.5 mm. This keeps the marquise above the side-stone clusters and leaves accessible space beneath the basket.

What gives the band its vintage character?
Floral and rose engraving runs through the upper shank with fine milgrain along the edges. The carved metal takes over after the round side diamonds end.

How should the engraved shoulders be cleaned?
Use a soft brush inside the floral recesses and around the round side stones. Those narrow carved areas collect more residue than the polished lower band.

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