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

IGI Report IncludedMade to OrderInsured Delivery

round lab grown diamond three stone ring in yellow gold

1 of 12

$705.00

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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

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
Ring Style	Three Stone
Center Diamond	Round · 6.50 mm · Approx. 1.00 ct
Side Diamonds	2 Trillion · 3.75 × 3.75 mm · Approx. 0.30 ct total (per CAD)
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 round lab grown diamond is paired with trillion side stones to create a clean three-stone engagement ring with balanced proportions. Signora Jewels makes every ring to order, giving each piece a precise fit and polished finish in your selected precious metal.

The 6.50 mm round center diamond is held in an open prong setting that allows light to enter from multiple angles for bright brilliance. The trillion side stones taper smoothly into the shoulders, giving the ring a wider look while maintaining a comfortable profile for daily wear.

Design Highlights

Approx. 1.00 ct round lab grown center diamond
Two trillion side diamonds
Classic three-stone engagement design
Open prong setting
High polish finish
Available in 11 precious metal options

The round brilliant center delivers maximum sparkle, while the trillion side stones create a gradual transition into the band and keep attention focused on the center diamond.

About Lab Grown Diamonds

Round brilliant diamonds are the most popular diamond shape because they are engineered to maximize brilliance and fire.

Every lab grown diamond from Signora Jewels has the same chemical, physical and optical properties as a mined diamond and is graded using 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 round lab grown center diamond shown in the CAD.

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

Why choose a round diamond?
Round brilliant diamonds provide the highest level of sparkle due to their precise facet arrangement.

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, fully insured and shipped with tracking.

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