Oval Cut Lab Grown Diamond Four-Prong Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

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$758.00

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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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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

Oval Cut · Cluster

Center

Oval Cut

Carat

1 ct

Customizable

Metal

Customizable

Setting

Cluster

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	Oval Cut · 10.40 × 7.15 mm · approx. 2.00 ct	1–4.5 ct
Marquise side diamonds	approx. 0.21 ct total	Scales with center
Round accent diamonds	approx. 0.19 ct total	Scales with center
Total accent weight	approx. 0.40 ct	Varies with center size
Total diamond weight	approx. 2.40 ct	Varies with selected center
Stone type	Lab Grown Diamond	—
Setting	Four-Prong center with marquise and round Side Stone clusters	—
Finish · Occasion	High Polish · Engagement, Anniversary	—

Diamond details

Shape	Role	Weight (approx.)
Oval Cut	Center · 10.40 × 7.15 mm	2.00 ct
Marquise Cut	Flanking side stones	0.21 ct total
Round Cut	Shoulder cluster accents	0.19 ct total
Total accents	Marquise + round diamonds	0.40 ct
Total	Center + accents	2.40 ct

At a glance

An oval lab grown diamond Four-Prong engagement ring from Signora Jewels.

A 2.00 ct, 10.40 × 7.15 mm oval center is framed by marquise and round side diamonds totaling approx. 0.40 ct. Approx. 2.40 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 10.40 × 7.15 mm oval above symmetrical engagement ring shoulders built from marquise and round diamonds. The marquise stones sit closest to the center, stretching the design sideways, while smaller rounds continue the cluster toward the polished lower shank.

The Four-Prong basket rises approximately 6.5–7.0 mm and stays open beneath the oval. At the base, the band measures about 1.60 mm wide and 1.60 mm thick, keeping the lower shank fine beneath the broader diamond-set shoulders.

Design highlights

2.00 ct oval center in the reference design
Center measures approx. 10.40 × 7.15 mm
Marquise side diamonds totaling approx. 0.21 ct
Round cluster accents totaling approx. 0.19 ct
Four-Prong center with elevated open basket
Approx. 2.40 ct total diamond weight

The marquise side stones create the first step away from the oval, then the round accents reduce the scale again toward the band. That graduated change keeps the center dominant while giving the shoulders more presence than a plain solitaire.

Diamond & Ring Details

Specification	Details
Center stone	Oval Cut · 10.40 × 7.15 mm · approx. 2.00 ct in the photos
Marquise side diamonds	approx. 0.21 ct total
Round accents	approx. 0.19 ct total
Total accent weight	approx. 0.40 ct
Total diamond weight	approx. 2.40 ct in the photographed configuration
Setting	Four-Prong center with marquise and round Side Stone clusters
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 oval center spreads its visual weight along the finger, while the marquise and round side stones break the shoulder line into two different facet patterns. Read more about shape and proportion in the diamond stone guide.

Metal, Care & Fit

White gold and platinum keep the prongs visually close to the diamonds; yellow and rose gold create stronger contrast around the side clusters. Compare choices in the metal guide. Clean beneath the open basket and around the clustered shoulder settings with warm water, mild soap and a soft brush.

FAQ

What do the marquise side diamonds do in this oval design?
The marquise side diamonds total approximately 0.21 ct and sit closest to the oval center. Their pointed outlines extend the setting sideways before the smaller round accents carry it into the band.

How much total accent diamond weight is in the shoulders?
The complete accent setting totals approximately 0.40 ct. That includes approx. 0.21 ct of marquise diamonds and 0.19 ct of round accents.

How is the oval center held?
The reference center sits in a Four-Prong setting. The open basket keeps most of the 10.40 × 7.15 mm oval visible while lifting it clear of the shoulder clusters.

How high does the center sit?
The reference setting rises approximately 6.5–7.0 mm. That leaves open space beneath the oval and separates it clearly from the side stones.

How should the clustered shoulder diamonds be cleaned?
Use a soft brush around the marquise settings, between the smaller round accents and beneath the center basket. Those tight junctions collect more residue than the polished lower shank.

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