Marquise Cut Lab Grown Diamond Eight-Prong Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

Marquise lab grown diamond engagement ring in yellow gold with eight rounded prongs in four pairs and a plain polished band

1 of 8

$540.00

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. 1.0 ct lab-grown diamond · IGI report · Signora Certificate included.

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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.

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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

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	Details
Center diamond	Marquise Cut · approx. 10.5 × 5.2 mm · approx. 1.00 ct
Accent diamonds	None · 0 stones · 0.00 ct
Total diamond weight	Approx. 1.00 ct · 1 stone
Stone type	Lab Grown Diamond
Diamond quality	F color · VS1 clarity
Setting	Eight-Prong · four pairs of rounded side prongs, with both marquise points exposed
Band	Plain polished shank · estimated 1.60 mm wide and 1.50 mm thick at the base
Shoulder width	Estimated 1.60–1.70 mm
Setting height	Estimated 6.0–6.5 mm
Finish · Occasion	High Polish · Engagement

At a glance

A marquise lab grown diamond eight-prong engagement ring from Signora Jewels.

One approx. 1.00 ct marquise, 10.5 × 5.2 mm, in an Eight-Prong setting; 0 accent diamonds, 0.00 ct.

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

Made to order in your selected metal with a fixed, approximately 1.00 ct marquise center.

Signora Jewels groups eight rounded prongs into four pairs around this marquise engagement ring. Both pointed ends remain exposed.

The approximately 1.00 ct center measures 10.5 × 5.2 mm, set lengthwise across a plain polished band. The lower shank is estimated at 1.60 mm wide.

Design highlights

One marquise-cut center, approximately 1.00 ct and 10.5 × 5.2 mm
Eight-Prong setting with four pairs of rounded tips
Both pointed ends visible without a prong directly over either point
Plain polished lower shank, estimated at 1.60 mm wide and 1.50 mm thick
No halo, side diamonds or diamond-set shoulders
Fixed center weight with 11 metal options

The paired tips are rounded rather than long claws. Two pairs follow the upper curves and two follow the lower curves, leaving gaps along the sides instead of a continuous metal border.

About Lab Grown Diamonds

One marquise lab grown diamond supplies the full approximately 1.00 ct total. There are no halo or shoulder diamonds.

Metal, Care & Fit

Yellow and rose gold emphasize the paired tips. Clean between them with a soft brush, following the care guidance.

FAQ

Do the eight prongs cover both marquise points?
Both pointed ends are exposed; the eight rounded tips sit in four pairs along the sides, not over the ends. Keep the points clear of hard knocks and remove the ring for lifting or workouts.

Are there accent diamonds in the four pairs around the center?
The four pairs are eight rounded metal prong tips, not accent diamonds. The ring’s entire approximately 1.00 ct total comes from its single marquise center.

Will the 1.60 mm band sit flush against a straight wedding band?
The estimated 1.60 mm width describes the lower shank, not the clearance beneath the marquise setting. Check a straight wedding band against the finished setting before relying on a flush fit.

How do I clean the narrow gaps between the paired prongs?
Each of the four groups has two rounded prong tips with a small gap between them. Work a soft brush gently around both tips using warm water and mild soap, then rinse and pat dry without catching cloth beneath the prongs.

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