Radiant Cut Lab Grown Diamond Side-Stone Engagement Ring (Marquise Sides)

IGI Report IncludedMade to OrderInsured Delivery

Radiant cut lab grown diamond side-stone engagement ring in yellow gold with marquise and round diamond band

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$742.00

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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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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.

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The Signora Promise

Hand-finished in SuratMade to order

Reports where statedExact scope shown

Insured deliverySigned & tracked

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Standard-design returns30-day eligibility

Final inspectionChecked before dispatch

About This Ring

Radiant Cut · Eternity

Center

Radiant Cut

Carat

Customizable

Metal

Customizable

Setting

Eternity

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	Radiant · 9.00 × 6.50 mm · approx. 2.80 ct	1–4.5 ct
Side diamonds	9 marquise and 8 round diamonds · approx. 0.84 ct total	Scales with center
Total diamond weight	approx. 3.64 ct · 18 stones	Varies with center size
Stone type	Lab Grown Diamond	—
Setting	Four-prong center with shared-prong side stones	—
Finish · Occasion	High Polish · Engagement, Anniversary, Bridal	—

Diamond details

Shape	Size	Qty	Weight (approx.)
Radiant	9.00 × 6.50 mm	1	2.80 ct
Marquise	4.25 × 2.25 mm	9	0.56 ct total
Round	2.10 × 2.10 mm	8	0.28 ct total
Total	—	18	3.64 ct

At a glance

A radiant lab grown diamond side-stone engagement ring from Signora Jewels.

A 9.00 × 6.50 mm radiant center of approx. 2.80 ct sits in a four-prong setting above 9 marquise and 8 round diamonds totaling approx. 0.84 ct. Approx. 3.64 ct total.

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

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

Signora Jewels sets the 9.00 × 6.50 mm radiant between four corner prongs, leaving its straight sides and clipped corners open to the eye. The stone sits above the band rather than sinking into it, so the 2.80 ct center keeps a clear outline from every angle.

Nine marquise diamonds alternate with eight 2.10 mm rounds around the band. The marquise stones stretch the pattern lengthwise, while the rounds break up the pointed shapes with smaller flashes of light. Shared prongs keep the gaps narrow and the metalwork light.

Design highlights

Radiant center shown at approx. 2.80 ct
Customizable center from 1–4.5 ct
Four corner prongs leave the radiant outline exposed
9 marquise side diamonds totaling approx. 0.56 ct
8 round side diamonds totaling approx. 0.28 ct
Alternating shared-prong diamond band

The alternating band is the working detail here. A row of identical stones would read as one texture; the marquise-and-round sequence gives the ring a measured rhythm and pulls the eye back toward the rectangular center. Browse more engagement rings, compare center shapes in the diamond stone guide, or review all finishes in the metal guide.

Diamond & Ring Details

Specification	Details
Center stone	Radiant · 9.00 × 6.50 mm · approx. 2.80 ct
Marquise accents	9 diamonds · 4.25 × 2.25 mm · approx. 0.56 ct total
Round accents	8 diamonds · 2.10 × 2.10 mm · approx. 0.28 ct total
Total weight / count	approx. 3.64 ct · 18 stones
Setting	Four-prong center with shared-prong side stones
Center options	1, 1.5, 2, 2.5, 2.80, 3, 3.5, 4 and 4.5 ct
Finish	High Polish

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

About Lab Grown Diamonds

A radiant cut combines straight edges with a brilliant-style facet pattern, so the center gives broad flashes rather than the narrow lines seen in a step cut. F color keeps the rectangular face bright beside the smaller marquise and round accents, while VS1 clarity keeps inclusions difficult to see without magnification.

Metal, Care & Fit

White gold and platinum make the shared prongs recede against the diamonds. Yellow or rose gold leaves a warmer line visible beneath the band. Clean between the alternating stones and under the radiant basket with warm water, mild soap and a soft brush, then check the shared prongs during routine professional cleaning.

FAQ

How securely is the radiant center held?
Four corner prongs grip the clipped corners of the 9.00 × 6.50 mm radiant. The setting leaves the long sides visible while protecting the points where the corners meet the girdle.

What do the marquise and round accents do visually?
The 9 marquise stones lengthen the diamond line, while the 8 rounds create smaller flashes between them. Together they keep the 2.80 ct radiant center visually separate from the band.

Which metal gives the side stones the most continuous look?
White gold or platinum blends most closely with the shared prongs. Yellow and rose gold create more visible contrast beneath the alternating diamonds.

How should I clean between the alternating side stones?
A soft brush reaches the narrow spaces between the marquise and round diamonds. Brush from the underside as well as the top so lotion does not collect around the shared prongs.

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