Radiant Cut Lab Grown Diamond Three-Stone Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

1 of 9

$655.00

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

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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.

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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

Radiant Cut · Three Stone

Center

Radiant Cut

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 · approx. 6.5 × 5.0 mm · 1.00 ct
Side diamonds	2 Tapered Baguette Cut · approx. 0.12 ct each · 0.24 ct total
Total diamond weight	Approx. 1.24 ct · 3 diamonds
Stone type	Lab Grown Diamond
Setting	Three-Stone with four-prong radiant center
Side setting	Individually set tapered baguette diamonds angled into the shoulders
Band	Plain polished shank · no pavé or halo
Finish · Occasion	High Polish · Engagement, Bridal

Diamond details

Shape	Size	Qty	Weight (approx.)
Radiant Cut center	6.5 × 5.0 mm	1	1.00 ct
Tapered Baguette Cut sides	Individual dimensions not specified	2	0.12 ct each · 0.24 ct total
Total	Center and side diamonds	3	1.24 ct

At a glance

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

A 1.00 ct radiant center measuring approximately 6.5 × 5.0 mm, held by four prongs and flanked by two tapered baguettes totaling 0.24 ct. Approx. 1.24 ct overall.

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

Made to order with a fixed 1.00 ct center. Choose your metal and color.

At Signora Jewels, the 6.5 × 5.0 mm radiant sits between two tapered baguettes in this three-stone engagement ring. Four rounded corner prongs hold the center while leaving its clipped-corner outline easy to read.

Each baguette weighs approximately 0.12 ct. Their wider ends face the radiant; the narrower ends step into a plain band measuring approximately 1.60 mm across at the base. No pavé follows them down the shank.

Design highlights

Fixed 1.00 ct radiant-cut center, approximately 6.5 × 5.0 mm
Four-prong setting around the rectangular center diamond
Two tapered baguette side diamonds, approximately 0.12 ct each
Approximately 0.24 ct total side-diamond weight
Plain polished shank, approximately 1.60 mm wide at the base
No halo and no pavé diamonds along the band

The tapered baguettes do the transition work. Their straight step facets sit beside the radiant, then narrow toward the polished shank without adding another row of stones.

About Lab Grown Diamonds

The radiant center uses brilliant-style faceting inside a rectangular outline, while the two tapered baguettes use long step facets. That change in facet pattern is visible across all three diamonds.

Metal, Care & Fit

Choose silver, yellow gold, white gold, rose gold or platinum. Compare the metal options before selecting your finish. The lower shank measures approximately 1.60 mm wide and 1.50 mm thick.

For cleaning and care, use warm water, mild soap and a soft brush around the four center prongs and both baguette settings. Rinse thoroughly and dry with a lint-free cloth.

FAQ

Why use tapered baguettes beside this radiant center?
The two tapered baguettes total approximately 0.24 ct and narrow toward the polished shank. Their straight step facets frame the rectangular radiant without surrounding it with a halo.

How is the 1.00 ct radiant center secured?
Four prongs hold the approximately 6.5 × 5.0 mm radiant at its corners. The arrangement keeps the clipped-corner shape visible while securing the stone at four points.

How wide is the band below the tapered baguettes?
The lower shank measures approximately 1.60 mm wide and 1.50 mm thick. It stays plain below the side stones, with no pavé diamonds along the band.

Will this three-stone ring stack flush with a straight wedding band?
The side settings occupy both shoulders, and the reference setting height is approximately 5.8–6.3 mm. A flush fit depends on the wedding band profile and the finished clearance beside those side settings.

How should I clean around the tapered baguettes?
Use warm water, mild soap and a soft brush around the inner and outer ends of both baguettes. Brush gently around the small setting points, rinse well and dry with a lint-free cloth.

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