Round Cut Lab Grown Diamond Three-Stone Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

1 of 9

$691.00

Price updates with your selections

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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Metal:

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Ring size Choose one

Forever, A & J

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Engraving 0 / 20

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

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	Round Brilliant Cut · approx. 6.4–6.5 mm · 1.00 ct
Side diamonds	2 Pear Cut · approx. 0.17 ct each · 0.34 ct total
Total diamond weight	Approx. 1.34 ct · 3 diamonds
Stone type	Lab Grown Diamond
Setting	Three-Stone with six-prong round center
Side settings	Individually prong-set pear diamonds, points facing outward
Band	Plain polished shank · no pavé or halo
Finish · Occasion	High Polish · Engagement, Bridal

Diamond details

Shape	Size	Qty	Weight (approx.)
Round Brilliant center	6.4–6.5 mm diameter	1	1.00 ct
Pear Cut sides	Individual dimensions not specified	2	0.17 ct each · 0.34 ct total
Total	Reference configuration	3	1.34 ct

At a glance

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

The 1.00 ct center measures approximately 6.4–6.5 mm, with two pear-cut side diamonds weighing 0.17 ct each. Three diamonds totaling approximately 1.34 ct.

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, we set a 6.4–6.5 mm round brilliant between two pear-cut diamonds in this three-stone engagement ring. The pear stones turn their rounded ends toward the center, with pointed tips facing out toward the polished band.

Each pear weighs approximately 0.17 ct. The center is secured by six rounded prongs, while the smaller stones sit in separate three-prong settings. The lower band measures approximately 1.50 mm wide, without a row of pavé diamonds.

Design highlights

Fixed 1.00 ct round brilliant center, approximately 6.4–6.5 mm
Two pear-cut side diamonds, approximately 0.17 ct each
Six rounded prongs securing the round center diamond
Individual three-prong settings around both pear side diamonds
Open three-stone arrangement with a plain polished shank
Approx. 1.50 mm lower band width and high-polish finish

The two pear diamonds narrow toward the shoulders, so the band transitions from three visible stones to polished metal. The reference head rises approximately 5.8–6.3 mm, leaving space beneath the center setting.

About Lab Grown Diamonds

The round brilliant center uses a circular outline, while the pear side diamonds combine rounded inner ends with pointed outer tips. All three stones are lab grown diamonds, with approximately 1.34 ct total diamond weight.

Metal, Care & Fit

Choose silver, yellow gold, white gold, rose gold or platinum. Compare the metal options before choosing your finish. The plain lower band is approximately 1.50 mm wide and 1.50 mm thick.

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

FAQ

How are the two pear side diamonds positioned?
The two pear-cut diamonds sit beside the round center with their rounded ends facing inward and pointed ends extending toward the band. Each weighs approximately 0.17 ct and has its own three-prong setting.

Why does the round center have six prongs?
Six rounded prongs secure the approximately 6.4–6.5 mm round brilliant center. Their evenly spaced contact points support the diamond while leaving its circular outline visible between the prongs.

Will this three-stone ring sit flush beside a straight wedding band?
The reference center setting stands approximately 5.8–6.3 mm high, with two pear diamonds extending toward the shoulders. A flush fit depends on clearance beneath the three-stone head and the accompanying band's profile.

How should I care for the pointed ends of the pear diamonds?
The pear tips point outward toward the polished shank. Avoid hard knocks against those ends, and clean gently around the three-prong side settings with warm water, mild soap and a soft brush.

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