Marquise Lab Grown Diamond Wide-Band Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

marquise diamond wide-band engagement ring in yellow gold

1 of 12

$1,013.00

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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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 Band

Marquise Cut · Solitaire

Center

Marquise Cut

Carat

1 ct

Customizable

Metal

Customizable

Setting

Solitaire

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
Ring style	Wide-band solitaire engagement ring	Included as shown
Center diamond	Marquise · 12.00 × 6.00 mm · approx. 2.00 ct	Yes — 1 to 4.5 ct
Accent diamonds	None	None
Total diamond weight	Approx. 2.00 ct · 1 diamond	Varies with center size
Stone type	Lab Grown Diamond	Lab Grown Diamond
Setting	Six-prong marquise basket with protected tips	Scaled to suit the selected center
Metal & color	Rose gold shown	Yes — 11 options
Band	Wide, tapered polished shank	Included as shown
Finish	High Polish	Included
Occasion	Engagement, Anniversary	—

At a glance

A marquise Lab Grown Diamond wide-band engagement ring from Signora Jewels.

As shown: one approx. 2.00 ct marquise center measuring 12.00 × 6.00 mm, secured in a six-prong setting with no accent diamonds.

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

Choose a center from 1 to 4.5 ct; the basket and metal weight scale with the selected diamond.

Made to order — the price updates with your selection. Change the center proportion or band width through our custom jewelry service.

Signora Jewels sets the 12.00 × 6.00 mm marquise across a substantial polished band, leaving the diamond as the only point of light. Six prongs hold the stone, with one at each pointed tip and four along the curved sides.

The shoulders rise toward the basket and narrow beneath the center, so the long outline stays visible instead of sinking into the metal. The broad shank has enough weight to steady the two-carat stone on the finger.

No pavé to catch lotion or collect dirt. From across the room, you see the marquise first; up close, the smooth band gives the setting its clean frame.

Design highlights

Marquise Lab Grown Diamond center, approx. 2.00 ct as shown
Approx. 12.00 × 6.00 mm center dimensions
Six-prong setting with both pointed tips protected
Single-diamond solitaire with no accent stones
Wide polished shoulders tapering toward the basket
Approx. 4.29 mm head height in the CAD reference
Approx. 2.51 mm band width at the lower shank
Made to order in 11 metal and color combinations

The wide band is the defining detail. It balances the length of the marquise and gives the ring a firmer feel than a fine-shank solitaire without covering the stone’s pointed outline.

Diamond & Ring Details

Specification	Details
Center stone	Marquise · 12.00 × 6.00 mm · approx. 2.00 ct as shown
Accent diamonds	None
Total diamond weight	Approx. 2.00 ct across 1 diamond as shown
Center setting	Six-prong marquise basket
Tip protection	Dedicated prong at each pointed end
Band	Wide tapered shank · approx. 2.51 mm at the base
reference size	US 7
Finish	High Polish

Measurements and weights are approximate. The basket and metal weight scale with the center size selected.

About Lab Grown Diamonds

A marquise cut stretches brilliant-style faceting into a pointed outline, giving it one of the largest face-up appearances for its carat weight. The six-prong basket protects both tips while leaving the curved sides open to light.

Lab grown diamonds have the same carbon crystal structure, hardness and optical properties as mined diamonds. They are graded using the same cut, color, clarity and carat standards.

Metal, Care & Fit

Choose silver, 9K/14K/18K gold in yellow, white or rose, or platinum. 9K has more strengthening alloy for daily wear, while 18K has higher gold content and richer color; compare them in the metal guide.

Order in your known US size. This band is wider than a fine solitaire shank, so a close measurement matters; use the ring size and fit guide. Clean with warm water, mild soap and a soft brush, paying attention beneath the basket.

FAQ

Can I choose another center diamond size?
Yes. The marquise center is available from 1 to 4.5 ct, and the basket and metal weight scale to the selected carat. The photographed configuration uses an approx. 2.00 ct center measuring 12.00 × 6.00 mm.

Are there any side or pavé diamonds?
No. This is a single-diamond solitaire with no accent stones, halo or pavé. The full diamond weight comes from the marquise center selected.

How are the pointed ends of the marquise protected?
Each pointed tip is covered by its own prong, with four additional prongs securing the curved sides. This six-prong arrangement guards the most vulnerable parts of the cut.

How does the wide band feel compared with a thin band?
The wide band feels firmer and distributes the ring’s weight across more of the finger. It also steadies the elongated center better than a very fine shank.

Will a wedding band sit beside this ring?
A straight wedding band sits close to the raised basket, with the final gap determined by the wedding band’s height. A contoured band follows the basket most closely.

What is the difference between 9K and 18K gold?
9K gold contains more strengthening alloy and has a harder surface, while 18K contains more gold and carries richer color. Both are solid gold choices for daily ring wear.

How do lab grown diamonds compare with mined diamonds?
Lab grown diamonds match mined diamonds in carbon structure, hardness and optical behavior; their origin is different. Signora Jewels supplies this ring only with Lab Grown Diamond stones.

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