1.5 ct Round Lab Grown Diamond Three Stone Ring

IGI Report IncludedMade to OrderInsured Delivery

1 of 16

$698.00

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:

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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.

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
Ring style	Three Stone
Center diamond	Round · 6.5 mm · approx. 1 ct
Side diamonds	2 round · approx. 0.5 ct
Total diamond weight	approx. 1.5 ct (3 stones)
Stone type	Lab Grown Diamond (CVD)
Diamond quality	E–F colour · VS clarity
Setting	Four-prong and prong basket settings
Finish	High Polish
Occasion	Engagement, Anniversary, Gift

Made to order — select your options above. Want something fully custom?
Customize your jewelry here.

Three diamonds, one story — past, present and future. A round lab grown diamond sits at the centre with a matching pair at its sides.

The centre is a 1 ct round lab grown diamond. Alongside it: two round diamonds (approx. 0.5 ct).

Balanced and meaningful, it has more presence than a single stone of the same weight.

Design highlights

Round lab grown diamond centre, E–F colour, VS clarity
2 round side diamonds, approx. 0.5 ct
About 1.5 ct of diamonds in total
Four-prong and prong basket settings
Made to order in your selected metal

About Lab Grown Diamonds

A round brilliant is cut with 57 facets arranged for maximum return of light — the most fiery and most classic of all diamond shapes. Set in a row, rounds give an unbroken line of sparkle.

Every Signora Jewels diamond is grown in a controlled lab using the CVD process, producing a stone that is chemically, optically, and physically identical to a mined diamond — same hardness, same fire, graded on the same 4C scale. Because the supply chain is short and traceable, you get a larger, cleaner stone for the same budget and a documented origin, with no mining footprint.

FAQ

Is the diamond included?
Yes — the price includes every diamond shown in the design.

Are lab grown diamonds real diamonds?
Yes. They are identical to mined diamonds in chemistry, hardness, and sparkle, and are graded on the same 4C scale.

What does a three stone ring stand for?
Traditionally the three stones represent your past, present and future together.

Can I get a different metal, size, or stone?
Choose your options on this page. For anything beyond that, we make custom pieces — Customize your jewelry here.

Can it be resized later?
Often, yes, but it depends on the design, metal and setting. Please contact us before any resizing so we can advise on the safest way to do it.

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