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

IGI Report IncludedMade to OrderInsured Delivery

Round lab grown diamond three stone engagement ring in yellow gold

1 of 12

$840.00

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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Center Diamond:

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Forever, A & J

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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.

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.

Each metal color is shown in the photos — pick your center size and metal in the options on this page.

Detail	In the Photos	Customizable
Center diamond	Round · approx. 1.33 ct	Yes — 1 to 4.5 ct
Metal & Color	Every color shown	Yes — 11 options
Accent diamonds	16 diamonds · approx. 0.45 ct	Included as shown
Total diamond weight	Approx. 1.78 ct	Varies with selected center size
Stone Type	Lab Grown Diamond	Lab grown or natural

AT A GLANCE

A round Lab Grown Diamond three stone engagement ring from Signora Jewels.

Shown with a 1.33 ct round center diamond, two trillion side diamonds and fourteen round pavé diamonds totaling approximately 0.45 ct.

Made to order in 11 metals: Sterling Silver, 9K, 14K and 18K gold (yellow, white and rose) plus Platinum.

Made to order — the price updates with your selection. Want something completely bespoke? Customize your jewelry here.

A brilliant Round Lab Grown Diamond Three Stone Engagement Ring designed to celebrate every milestone. The sparkling round center is framed by trillion side diamonds while a pavé band adds brilliance from every angle without overwhelming the center stone.

Every Signora Jewels ring is individually handcrafted after your order is placed. Choose your preferred center diamond size and metal, and our master craftsmen build your ring specifically for you.

The graceful proportions create exceptional finger coverage while the pavé shoulders add continuous sparkle, making this ring equally beautiful for everyday wear or life's most memorable occasions.

Design Highlights

Round brilliant center diamond
Two trillion side diamonds
Pavé set diamond shoulders
Classic three-stone engagement design
Customizable center diamond from 1–4.5 ct
Made to order in 11 precious metals
High polish comfort-fit band

The combination of trillion side stones and pavé shoulders creates layers of sparkle that naturally guide the eye toward the brilliant round center diamond.

Diamond & Ring Details

Specification	Details
Center Diamond	Round · 7.20 mm · Approx. 1.33 ct (shown)
Side Diamonds	2 Trillion · Approx. 0.20 ct total
Pavé Diamonds	14 Round · Approx. 0.246 ct total
Total Weight	Approx. 1.776 ct · 17 Diamonds
Setting	Four-Prong Center · Prong Set Side Stones · U-Cut Pavé
Finish	High Polish

Measurements are approximate. Final proportions vary according to the selected center diamond size.

About Lab Grown Diamonds

The round brilliant is cut with 57–58 precisely arranged facets to maximize brilliance and fire, making it the world's most popular engagement diamond shape.

Every Signora Jewels diamond is lab grown—chemically, physically and optically identical to a mined diamond, graded to the same international standards while offering exceptional value and responsible sourcing.

Metal, Care & Fit

Available in Sterling Silver, 9K, 14K and 18K gold in yellow, white or rose, together with Platinum. Order your regular ring size. Clean with warm water, mild soap and a soft brush, then store separately to preserve brilliance.

FAQ

Can I choose a different center diamond size?
Yes. Select from 1 to 4.5 carats and every ring is individually crafted to maintain perfect proportions.

Are lab grown diamonds real diamonds?
Yes. They are chemically, physically and optically identical to mined diamonds and graded using the same international standards.

What is the total diamond weight?
The ring shown contains approximately 1.776 ct total, including a 1.33 ct center diamond and approximately 0.446 ct of accent diamonds.

What do three-stone engagement rings symbolize?
They traditionally represent your past, present and future, making them one of the most meaningful engagement ring styles.

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

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