Radiant Cut Lab Grown Diamond Open Gallery Three-Stone Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

Radiant cut Lab Grown Diamond three-stone engagement ring in white gold with kite side diamonds and plain shank

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$848.00

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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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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 · Three Stone

Center

Radiant Cut

Carat

1 ct

Customizable

Metal

Customizable

Setting

Three Stone

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	Radiant Cut · 6.60 × 5.40 mm · approx. 1.01 ct
Side diamonds	2 Kite Cut diamonds · 4.20 × 2.60 mm each · approx. 0.24 ct total
Total diamond weight	approx. 1.25 ct · 3 stones
Stone type	Lab Grown Diamond
Setting	Four-Prong Three-Stone setting with open gallery
Finish · Occasion	High Polish · Engagement, Wedding

Diamond details

Shape	Size	Qty	Weight (approx.)
Radiant Cut	6.60 × 5.40 mm	1	1.01 ct
Kite Cut	4.20 × 2.60 mm each	2	0.24 ct total
Total	—	3	1.25 ct

At a glance

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

A 6.60 × 5.40 mm radiant center weighing approx. 1.01 ct sits between two 4.20 × 2.60 mm kite diamonds totaling approx. 0.24 ct. Approx. 1.25 ct total.

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

Choose your preferred metal from the options on this page.

Signora Jewels pairs the 1.01 ct radiant center with two kite cuts that point directly into its long sides. The three stones sit in separate open settings, so their outlines stay visible instead of blending into one block of metal.

Four rounded prongs hold the 6.60 × 5.40 mm center. The plain comfort shank leaves the top uncluttered, while the tapered kite diamonds bridge the change from the rectangular center to the narrow band. From the side, the open gallery gives a brush room beneath every stone.

Design highlights

1.01 ct radiant cut center diamond
Two kite cut side diamonds totaling approx. 0.24 ct
Four-prong center setting
Open three-stone gallery
Plain comfort shank
Approx. 1.25 ct total across 3 diamonds

The kite cuts are the working detail here: their sharp outer points continue the center’s clipped-corner geometry without adding pavé. Browse more three-stone rings, compare cuts in the diamond stone guide, or review metals in the metal guide.

About Lab Grown Diamonds

A radiant cut combines a rectangular outline with a brilliant-style facet pattern, producing smaller flashes across the center. The kite side stones return light differently, with longer reflections that draw the eye inward toward the 1.01 ct center.

Metal, Care & Fit

White Gold and Platinum keep the three stones visually connected, while Yellow or Rose Gold outlines each diamond more clearly. Clean between the center basket and the kite settings with warm water, mild soap and a soft brush. The plain lower shank sits smoothly beside most straight wedding bands.

FAQ

What do the kite side diamonds add to this ring?
The two kite cuts add approx. 0.24 ct and taper the design from the 6.60 × 5.40 mm radiant center into the plain shank.

Are the radiant center’s corners protected?
Four rounded prongs sit at the clipped corners of the center, holding the stone without covering its rectangular outline.

Will this ring stack with a straight wedding band?
The plain comfort shank provides a straightforward stacking surface, though the raised three-stone setting can leave a small gap beside some bands.

How should the open three-stone setting be cleaned?
Brush beneath the radiant basket and behind both kite diamonds, where lotion and soap collect around the open gallery.

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