Marquise Cut Lab Grown Diamond Hidden Halo Split Shank

IGI Report IncludedMade to OrderInsured Delivery

Gold ring with a large diamond and smaller diamonds on the band against a white background

1 of 13

$1,145.00

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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Metal:

Center Diamond:

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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 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.

Each metal color is shown in the photos — pick your center size and metal in the options on this page.

Detail	In the photos	Customizable
Center diamond	Marquise · 1.41 ct	Yes — 1 to 4.5 ct
Metal & color	Every color shown	Yes — 11 options
Side stones	46 diamonds · approx. 0.45 ct	Included as shown
Total diamond weight	approx. 1.86 ct	Varies with center size
Stone type	Lab Grown Diamond	Lab grown or natural

Made to order — the price updates with your selection. Want fully bespoke?

Customize your jewelry here.

This marquise lab grown diamond engagement ring brings together bold proportions and graceful movement. At its center sits a striking marquise-cut diamond, elevated above a split shank design that draws the eye directly toward the stone.

The double-band silhouette creates an airy, sculptural profile while rows of hand-set pavé diamonds add sparkle from every angle. The open structure keeps the ring light on the finger while giving it a distinctive presence.

Made to order in your chosen metal and center size, this design offers the freedom to create a ring that feels uniquely yours while maintaining the balanced proportions that make the style so captivating.

Design highlights

Marquise-cut lab grown diamond center stone
Elegant split shank design
Pavé-set diamonds along both upper bands
Four-prong setting showcasing the elongated silhouette
Open gallery for maximum light return
Comfortable high-polish interior
Customizable center size from 1 CT to 4.5 CT
Available in 11 metal and color options

The elongated marquise shape creates a flattering finger-lengthening effect, while the split shank adds architectural detail and extra brilliance without overwhelming the center diamond.

Diamond Details

Specification	Details
Center Stone Shape	Marquise Cut
Center Stone Size	12.00 × 6.00 mm
Center Stone Weight (as shown)	Approx. 1.41 CT
Side Stones	46 round diamonds · approx. 0.45 CT
Total Diamond Weight	Approx. 1.86 CT
Total Diamond Count	47
Stone Type	Lab Grown Diamond
Setting	Split Shank Pavé

Measurements are approximate; your chosen size sets the final center weight.

Ring Specifications

Feature	Details
Ring Style	Split Shank Pavé
Metal Options	Silver, 9K, 14K, 18K Gold, Platinum
Available Colors	Yellow Gold, White Gold, Rose Gold, Silver, Platinum
Setting Type	Four-Prong Split Shank
Finish	High Polish
Occasion	Engagement, Anniversary, Bridal

About Lab Grown Diamonds

A marquise stretches weight across a long, pointed boat shape, so it presents one of the largest face-up sizes per carat. Its tapering ends draw the eye down the finger and make a confident, regal statement.

Every Signora Jewels diamond is grown in a controlled lab using the CVD process, producing a stone that is chemically, optically, and physically identical to a mined diamond — same hardness, same fire, graded on the same 4C scale. Because the supply chain is short and traceable, you get a larger, cleaner stone for the same budget and a documented origin, with no mining footprint. The result is a diamond that looks and tests exactly as a natural one, with more carat and clarity for your money.

FAQ

Can I change the center stone size?
Yes. Center sizes from 1 CT to 4.5 CT are available, and the setting is scaled to suit the stone you choose.

Are lab grown diamonds real diamonds?
Yes. They are identical to mined diamonds in chemistry, hardness, and sparkle, and are graded on the same 4C scale.

Will this ring keep its sparkle over time?
Yes. Lab grown diamonds are a 10 on the Mohs hardness scale and maintain their brilliance for a lifetime with normal care.

What makes the split shank design special?
The split shank creates visual balance around the center stone, adds extra pavé sparkle, and gives the ring a distinctive contemporary profile.

Which metals can I choose?
Silver, 9K / 14K / 18K gold in yellow, white or rose, and Platinum.

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