Round Lab Grown Diamond Three Stone Engagement Ring (1.33 ct, Round Sides)

IGI Report IncludedMade to OrderInsured Delivery

Round lab grown diamond three stone engagement ring in yellow gold

1 of 12

$904.00

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

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Metal:

Center Diamond:

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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.

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.

Every metal color shown in the gallery is available. Choose your preferred metal and center diamond size using the options above.

Detail	In the Photos	Customizable
Center Diamond	Round • Approx. 1.33 ct	Yes — 1, 1.33, 1.5, 2, 2.5, 3, 3.5, 4 & 4.5 ct
Side Diamonds	2 Round • Approx. 0.478 ct total	Included
Metal	All colors shown	11 Precious Metal Options
Total Diamond Weight	Approx. 1.808 ct	Varies with selected center diamond
Stone Type	Lab Grown Diamond	Lab Grown or Natural

AT A GLANCE

A Round Lab Grown Diamond Three Stone Engagement Ring by Signora Jewels.

Shown with an approximately 1.33 ct round center diamond and two round side diamonds totaling approximately 0.478 ct.

Made to order in Sterling Silver, 9K, 14K and 18K yellow, white or rose gold, plus Platinum.

Made to order — the price updates automatically with your selected center diamond. Looking for something unique? Customize your jewelry here.

The timeless beauty of a round brilliant center diamond paired with perfectly balanced side stones creates an engagement ring that never goes out of style. The classic three-stone design symbolizes your past, present and future while maximizing brilliance from every angle.

Every Signora Jewels ring is handcrafted after your order is placed. Choose your preferred diamond size and precious metal to create a ring designed specifically for you.

Browse our Engagement Rings for more timeless styles or explore our Three Stone Rings collection.

Design Highlights

Round brilliant center diamond
Two matching round side diamonds
Classic three-stone engagement design
Secure four-prong settings
Comfort-fit high polish band
Available in 11 premium precious metals
Customizable center diamond size

Diamond Details

Specification	Details
Center Diamond	Round • 7.20 mm • Approx. 1.33 ct (shown)
Side Diamonds	2 Round • Approx. 0.478 ct Total
Total Diamond Weight	Approx. 1.808 ct
Setting	Three Stone • Four-Prong
Finish	High Polish

Measurements are approximate. Ring proportions adjust automatically with the selected center diamond size.

About Lab Grown Diamonds

Round brilliant diamonds are renowned for delivering the highest level of sparkle. Every Signora Jewels lab grown diamond is chemically, physically and optically identical to a mined diamond while offering exceptional beauty and value.

Metal, Care & Fit

Available in Sterling Silver, 9K, 14K and 18K yellow, white or rose gold together with Platinum. Clean using warm water, mild soap and a soft brush to maintain lasting brilliance.

FAQ

Can I choose another center diamond size?
Yes. Select from 1 to 4.5 carats while maintaining the design's proportions.

Are the side diamonds included?
Yes. The two round side diamonds shown are included with every ring.

Are lab grown diamonds real diamonds?
Yes. They are chemically, physically and optically identical to mined diamonds.

What does a three-stone ring represent?
Traditionally, the three stones symbolize your past, present and future.

Can the ring be resized?
Most precious metal versions can be professionally resized after purchase.

How is my ring delivered?
Your Signora Jewels ring is shipped fully insured with secure packaging and tracking.

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