Dutch Marquise Lab Grown Diamond Dual Shank Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

Dutch marquise Lab Grown Diamond engagement ring in white gold with a parallel dual shank and six-prong cathedral basket.

1 of 10

$846.00

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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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.

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 · 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
Center diamond	Dutch Marquise Cut · 10.38 × 4.96 × 3.32 mm · approx. 1.00 ct	1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct, 4.5 ct
Accent diamonds	None	—
Total diamond weight	Approx. 1.00 ct	Varies with center size
Stone type	Lab Grown Diamond	—
Setting	Six-Prong Cathedral Open Basket with Parallel Dual Shank	—
Finish · Occasion	High Polish · Engagement, Anniversary, Bridal	—

At a glance

A Dutch marquise lab grown diamond dual shank engagement ring from Signora Jewels.

An approximately 1.00 ct Dutch marquise diamond measuring 10.38 × 4.96 × 3.32 mm is secured in a six-prong cathedral basket above a parallel dual shank.

Made to order in 11 metals: Silver, 10K/14K/18K Gold (Yellow, White and Rose) and Platinum.

Each metal color is shown in the photos. Choose your preferred center diamond weight and metal from the options on this page.

The Dutch marquise creates an elongated silhouette that appears even more striking when paired with the clean symmetry of the parallel dual shank. At Signora Jewels, six prongs secure the pointed tips and curved sides while the cathedral basket lifts the diamond above an open gallery, allowing light to travel through the pavilion.

The twin bands remain separate as they approach the center before flowing into the basket, creating an architectural profile without adding unnecessary weight. Measuring approximately 2.00 mm across the base with a combined shoulder width of approximately 3.20 mm, the ring balances the elongated center while remaining comfortable for everyday wear.

Browse our engagement rings, compare unique diamond shapes in the diamond stone guide, or explore precious metal options in our metal guide.

Design highlights

Dutch marquise center shown at approximately 1.00 ct
Customizable center diamond from 1 ct to 4.5 ct
Six-prong cathedral open basket
Parallel dual shank design
Open gallery beneath the center diamond
Comfort-fit band approximately 2.00 mm wide

The parallel shanks create negative space beneath the center stone, giving the ring a lighter appearance while naturally drawing attention toward the elongated marquise. The open gallery keeps the profile airy and allows the unique outline of the Dutch marquise to remain the focal point.

Diamond & Ring Details

Specification	Details
Center stone	Dutch Marquise Cut · 10.38 × 4.96 × 3.32 mm · approx. 1.00 ct (shown)
Accent stones	None
Total weight / count	Approx. 1.00 ct · 1 Diamond
Setting	Six-Prong Cathedral Open Basket with Parallel Dual Shank
Center options	1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct and 4.5 ct
Finish	High Polish

Measurements are approximate. Your selected center diamond weight determines the final proportions of the finished ring.

About Lab Grown Diamonds

The Dutch marquise combines an elongated outline with brilliant-cut faceting that delivers lively sparkle while creating elegant finger coverage. Every center diamond is F color, VS1 clarity and , selected to complement the proportions of this cathedral solitaire.

Metal, Care & Fit

Available in Silver, 10K, 14K and 18K Yellow, White and Rose Gold, plus Platinum. Clean beneath the cathedral basket and between the parallel shanks using warm water, mild soap and a soft brush to remove everyday buildup and maintain maximum brilliance.

FAQ

Why does this ring use a parallel dual shank?
The two bands create an open architectural profile that visually supports the elongated center diamond without making the ring appear bulky.

How do the six prongs protect the Dutch marquise?
The prongs secure both pointed ends and the curved sides of the diamond, helping protect the most delicate areas while maintaining an open view of the stone.

Can this ring be worn with a wedding band?
Yes. The cathedral basket allows many straight wedding bands to sit close, while contoured bands can follow the raised profile more precisely.

Which metal color best complements this design?
White gold and platinum emphasize the clean architectural lines of the dual shank, while yellow and rose gold provide warm contrast around the Dutch marquise center diamond.

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