Princess Cut Diamond Ring with Marquise Side Stones

IGI Report IncludedMade to OrderInsured Delivery

1 of 14

$580.00

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.

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

Princess Cut ·

Center

Princess Cut

Carat

1 ct

Customizable

Metal

Customizable

Setting

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	Princess · 2.64 ct	Yes — 1 to 4.5 ct
Side Stones	13 Marquise Diamonds · approx. 0.85 ct	Included as shown
Metal & color	Every color shown	Yes — 11 options
Total diamond weight	approx. 3.49 ct	Varies with center size
Stone type	Lab Grown Diamond	—

Made to order — the price updates with your selection. Want fully bespoke?

Customize your jewelry here.

This princess lab grown diamond engagement ring combines crisp geometric brilliance with a distinctive marquise side stone design. The square center diamond is complemented by alternating marquise accents that create a graceful, luxurious silhouette across the band.

The combination of the bold princess-cut center and elongated marquise side stones delivers exceptional finger coverage and sparkle from every angle. The shared-prong setting allows maximum light exposure, enhancing brilliance throughout the design.

Made to order in your preferred center size and precious metal, this ring blends modern elegance with timeless craftsmanship for a look that feels both sophisticated and unforgettable.

Design highlights

Princess-cut lab grown diamond center stone
13 marquise-cut side diamonds
Elegant side stone engagement ring design
Shared-prong setting for maximum brilliance
Strong finger coverage and visual impact
Comfortable high-polish band
Customizable center sizes from 1 ct to 4.5 ct
Available in 11 precious metal options

The clean lines of the princess-cut center diamond pair beautifully with the soft curves of the marquise accents, creating a balanced design that feels both contemporary and timeless.

Diamond Details

Specification	Details
Center Stone Shape	Princess Cut
Center Stone Size	7.50 × 7.50 mm
Center Stone Weight (as shown)	Approx. 2.64 CT
Side Stones	13 Marquise Diamonds · approx. 0.85 CT
Total Diamond Weight	Approx. 3.49 CT
Total Diamond Count	14
Stone Type	Lab Grown Diamond
Setting	Four-Prong Center with Shared-Prong Side Stones

Measurements are approximate; your chosen size sets the final center weight.

Ring Specifications

Feature	Details
Ring Style	Side Stone Engagement Ring
Metal Options	Silver, 10K Yellow Gold, 10K White Gold, 10K Rose Gold, 14K Yellow Gold, 14K White Gold, 14K Rose Gold, 18K Yellow Gold, 18K White Gold, 18K Rose Gold, Platinum
Available Colors	Yellow Gold, White Gold, Rose Gold, Silver, Platinum
Setting Type	Four-Prong Center & Shared-Prong Side Stones
Finish	High Polish
Occasion	Engagement, Anniversary, Bridal

About Lab Grown Diamonds

A princess cut combines a square outline with brilliant-cut faceting, delivering exceptional sparkle and a modern appearance. Its sharp lines pair beautifully with accent stones, creating a bold and elegant engagement ring design.

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

Can I change the center stone size?
Yes. Center sizes from 1 CT to 4.5 CT are available, and the setting is scaled to suit the stone you choose.

Are the side stones included?
Yes. All marquise side stones shown in the design are included and remain proportioned to the ring design.

Which metals can I choose?
Silver, 10K / 14K / 18K gold in yellow, white or rose, and Platinum.

Are lab grown diamonds real diamonds?
Yes. Lab grown diamonds are chemically, physically, and optically identical to mined diamonds and are graded on the same 4C scale.

Will a lab grown diamond last?
Yes. Lab grown diamonds are a 10 on the Mohs hardness scale and are suitable for everyday wear for a lifetime.

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