Round Cut Lab Grown Diamond Three-Stone Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

1 of 8

$879.00

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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

Round Brilliant · Three Stone

Center

Round Brilliant

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	In the photos	Customizable
Center diamond	Round Brilliant Cut · 7.50 mm · approx. 1.50 ct	1–4.5 ct
Accent diamonds	Round side and pavé diamonds · approx. 0.49 ct total	Scales with center
Total diamond weight	approx. 1.99 ct	Varies with center size
Stone type	Lab Grown Diamond	—
Setting	Four-Prong Three-Stone with pavé Split Shank shoulders	—
Finish · Occasion	High Polish · Engagement, Anniversary	—

Diamond details

Shape	Role	Weight (approx.)
Round Brilliant Cut	Center · 7.50 mm	1.50 ct
Round Cut	Larger flanking side stones	0.32–0.34 ct total
Round Cut	Pavé shoulder accents	0.15–0.17 ct total
Total accents	Side + pavé diamonds	0.49 ct
Total diamond weight	Center + accents	1.99 ct

At a glance

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

A 1.50 ct, 7.50 mm round brilliant center is flanked by larger round side stones and pavé accents totaling approx. 0.49 ct. Approx. 1.99 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 gives the center room by setting the 7.50 mm round above two larger round side diamonds rather than surrounding it with a halo. The shoulders twist into a three-stone ring profile, with pavé diamonds recessed along the split sections.

The Four-Prong center sits approximately 6.5–7.0 mm high, leaving an open gallery underneath. At the base, the shank narrows to about 1.40 mm wide and 1.70 mm thick, while the upper shoulders spread to roughly 5.0–6.0 mm around the side stones.

Design highlights

1.50 ct round brilliant center in the photographed design
Center measures approx. 7.50 mm diameter
Round side and pavé diamonds totaling approx. 0.49 ct
Four-Prong raised center setting
Twisted Split Shank shoulders with recessed pavé
Approx. 1.99 ct total diamond weight

The larger side rounds bridge the visual gap between the center and the pavé. From above, the stones step down in scale toward the band; from the side, the elevated basket keeps the center clearly separate from the split shoulders.

Diamond & Ring Details

Specification	Details
Center stone	Round Brilliant Cut · 7.50 mm · approx. 1.50 ct in the photos
Accent diamonds	Round side and pavé diamonds · approx. 0.49 ct total
Total diamond weight	approx. 1.99 ct in the photographed configuration
Setting	Four-Prong Three-Stone with pavé Split Shank shoulders
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 round brilliant center concentrates light into a symmetrical circular face, while the smaller rounds carry the same facet pattern through the shoulders. See the diamond stone guide for more on round cut and proportions.

Metal, Care & Fit

White gold and platinum keep the pavé visually close to the diamonds; yellow and rose gold give the twisted shoulder structure more contrast. Compare options in the metal guide. Clean beneath the raised basket and along both pavé sections with warm water, mild soap and a soft brush.

FAQ

What makes this a three-stone design?
The round center is flanked by two visibly larger round side diamonds before the pavé begins. That creates a stepped three-stone profile rather than a continuous row of equally sized diamonds.

How much diamond weight is in the side and pavé setting?
The accent diamonds total approximately 0.49 ct. That includes the larger flanking rounds and the smaller pavé diamonds running through the split shoulders.

How high does the round center sit?
The setting rises approximately 6.5–7.0 mm. The open gallery keeps the 7.50 mm center above the twisted shoulder structure.

Will this ring sit completely flush with a straight wedding band?
The elevated basket and split shoulders can leave a small gap beside a straight band. A contoured band follows the side profile more closely.

How should the pavé shoulders be cleaned?
Use a soft brush along the recessed diamond rows and beneath the open center gallery. Those narrow spaces collect more residue than the plain lower shank.

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