Marquise Lab Grown Diamond Bypass Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

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$781.00

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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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Ring size Choose one

Forever, A & J

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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 · Halo

Center

Marquise 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	In the photos	Customizable
Center diamond	Marquise Cut · 15.45 × 7.61 mm · approx. 3.00 ct	1–4.5 ct
Shoulder diamonds	Round pavé diamonds · approx. 0.43 ct total	Scales with center
Hidden halo	Round diamonds · approx. 0.12 ct total	Scales with center
Total accent weight	approx. 0.55 ct	Varies with center size
Total diamond weight	approx. 3.55 ct	Varies with selected center
Stone type	Lab Grown Diamond	—
Setting	Six-Prong Bypass with Hidden Halo and open gallery	—
Finish · Occasion	High Polish · Engagement, Anniversary	—

Diamond details

Shape	Role	Weight (approx.)
Marquise Cut	Center · 15.45 × 7.61 mm	3.00 ct
Round Cut	Twisted pavé shoulders	0.43 ct total
Round Cut	Hidden Halo	0.12 ct total
Total accents	Shoulders + Hidden Halo	0.55 ct
Total	Center + accents	3.55 ct

At a glance

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

A 3.00 ct, 15.45 × 7.61 mm marquise center rises above round accents totaling approx. 0.55 ct across the twisted shoulders and Hidden Halo. Approx. 3.55 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 15.45 × 7.61 mm marquise above crossing pavé shoulders, so the band appears to twist as it approaches the center. A Hidden Halo sits beneath the diamond rather than around its face, adding light from the side while leaving the long pointed outline unobstructed from above.

The reference setting rises approximately 8.0–8.5 mm. The lower shank measures about 2.60 mm wide and 2.30 mm thick, giving the ring more substance at the base than a fine-wire solitaire while the upper shoulders taper around the center.

Design highlights

3.00 ct marquise center in the reference design
Center measures approx. 15.45 × 7.61 mm
Twisted pavé shoulder diamonds · approx. 0.43 ct total
Hidden Halo diamonds · approx. 0.12 ct total
Six-Prong elevated center with open gallery
Approx. 3.55 ct total diamond weight

The Bypass structure keeps the shoulders moving instead of meeting the center in a straight line. From above, the pavé curves pull toward the marquise; from an angle, the Hidden Halo appears beneath the basket and adds a second layer of light.

Diamond & Ring Details

Specification	Details
Center stone	Marquise Cut · 15.45 × 7.61 mm · approx. 3.00 ct in the photos
Shoulder diamonds	Round pavé diamonds · approx. 0.43 ct total
Hidden Halo	Round diamonds · approx. 0.12 ct total
Total accent weight	approx. 0.55 ct
Total diamond weight	approx. 3.55 ct in the photographed configuration
Setting	Six-Prong Bypass with Hidden Halo and open gallery
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 reference marquise measures 15.45 mm from tip to tip, giving it pronounced length along the finger. Smaller round accents add tighter flashes through the shoulders and beneath the center. Read more in the diamond stone guide.

Metal, Care & Fit

White gold and platinum keep the pavé and Hidden Halo visually close to the center, while yellow and rose gold make the crossing shoulder structure easier to distinguish. Compare options in the metal guide. Clean beneath the open gallery and through both pavé curves with warm water, mild soap and a soft brush. See more engagement rings.

FAQ

Where is the Hidden Halo on this marquise ring?
The Hidden Halo sits below the face of the marquise and totals approximately 0.12 ct. It is visible from the side rather than forming a border around the center from above.

How much diamond weight is set into the twisted shoulders?
The round pavé diamonds along the shoulders total approximately 0.43 ct. Together with the Hidden Halo, the accent weight is approximately 0.55 ct.

How are the pointed ends of the marquise protected?
The center uses a Six-Prong setting with support at both pointed ends and along the sides. The prongs secure the 15.45 × 7.61 mm reference center while leaving its outline exposed.

How high does the center sit?
The reference setting rises approximately 8.0–8.5 mm. That elevation creates room for the open gallery and Hidden Halo beneath the center.

How should the pavé shoulders and Hidden Halo be cleaned?
Use a soft brush along both crossing pavé rows and underneath the basket. Those recessed areas collect more residue than the polished lower shank.

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