Princess Lab Grown Diamond Three Stone Engagement Ring (1.00 ct, Trillion Sides)

IGI Report IncludedMade to OrderInsured Delivery

princess lab grown diamond three stone ring in yellow gold

1 of 12

$712.00

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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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Metal:

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Ring size Choose one

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

Princess Cut · Three Stone

Center

Princess 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
Ring Style	Three Stone
Center Diamond	Princess · 5.50 × 5.50 mm · Approx. 1.00 ct
Side Diamonds	2 Trillion · 3.75 × 3.75 mm · Approx. 0.30 ct total
Total Diamond Weight	Approx. 1.30 ct
Stone Type	Lab Grown Diamond
Setting	Prong Setting
Finish	High Polish
Occasion	Engagement, Anniversary

Made to order — select your options above. Want something custom?

Customize your jewelry here.

A princess lab grown diamond sits at the center of this three-stone engagement ring, accented by trillion side diamonds that create clean geometric lines from every angle. Signora Jewels crafts every ring to order for a precise fit and refined finish.

The 5.50 × 5.50 mm princess center is secured with sturdy corner prongs that protect each corner while allowing light to enter the stone. Two trillion side diamonds taper naturally into the band, creating a balanced profile with added brilliance and comfortable everyday wear.

Design Highlights

1.00 ct princess lab grown diamond center
Two trillion lab grown side diamonds
Approx. 1.30 ct total diamond weight
Classic three-stone engagement design
Open prong setting for maximum light performance
Available in 11 precious metal options

The square princess cut delivers crisp sparkle with sharp, modern lines, while the trillion side diamonds soften the transition into the band for a balanced three-stone design.

About Lab Grown Diamonds

Princess cut diamonds are known for their brilliant faceting and contemporary square shape, producing exceptional sparkle with clean, defined edges.

Every lab grown diamond from Signora Jewels is chemically, physically and optically identical to a mined diamond and graded to the same international standards.

Metal, Care & Fit

Available in Sterling Silver, 9K, 14K and 18K yellow, white and rose gold, plus platinum. Clean with warm water, mild soap and a soft brush, then dry with a lint-free cloth.

FAQ

Is the center diamond included?
Yes. The ring includes the 1.00 ct princess lab grown center diamond and two trillion side diamonds exactly as shown.

What is the total diamond weight?
The total lab grown diamond weight is approximately 1.30 ct.

Are lab grown diamonds real diamonds?
Yes. They have the same chemical, physical and optical properties as mined diamonds.

Why choose a princess cut?
The princess cut offers sharp lines, brilliant sparkle and a modern square profile.

Can this ring be resized?
Most precious metal versions can be resized. Contact Signora Jewels for assistance.

How is the ring shipped?
Every order is securely packaged, insured and shipped with tracking.

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