Princess Cut Lab Grown Diamond Antique Style Infinity Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

Gold ring with a large diamond and smaller diamonds on the band against a white background

1 of 14

$689.00

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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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 ·

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 · 2.28 ct	Yes — 1 to 4.5 ct
Metal & color	Every color shown	Yes — 11 options
Side stones	30 diamonds · approx. 0.32 ct	Included as shown
Total diamond weight	approx. 2.60 ct	Varies with center size
Stone type	Lab Grown Diamond	Lab grown or natural

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

This princess cut lab grown diamond engagement ring blends bold geometry with flowing, nature-inspired detail. A square center diamond rises above an open gallery, while the shoulders intertwine with marquise-shaped motifs that create movement and sparkle from every angle.

Hand-set round accent diamonds follow the leaf-inspired design along each shoulder and beneath the center, adding light without overwhelming the clean lines of the princess cut. The result feels intricate up close while remaining elegant and balanced on the hand.

Made to order in your choice of metal and center diamond size, this design offers the freedom to create a ring that reflects your style while keeping the distinctive silhouette shown in the photos.

Design highlights

Princess cut lab grown diamond center
Four-prong setting with open gallery
Nature-inspired marquise motif shoulders
30 round accent diamonds integrated into the design
Hidden side detailing beneath the center stone
Delicate milgrain-inspired edges for added texture
Comfortable high-polish band for everyday wear
Available with center sizes from 1 CT to 4.5 CT

The contrast between the crisp square center and the flowing leaf-inspired details gives this ring a distinctive character. From the side, the open gallery allows light to enter the center stone while revealing the intricate craftsmanship beneath.

Diamond Details

Specification	Details
Center Stone Shape	Princess Cut
Center Stone Size	7.50 × 7.50 mm
Center Stone Weight (as shown)	Approx. 2.28 CT
Accent Diamonds	30 round diamonds · approx. 0.32 CT
Total Diamond Weight	Approx. 2.60 CT
Total Diamond Count	31
Stone Type	Lab Grown Diamond
Setting	Four-Prong Nature Inspired Setting

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

Ring Specifications

Feature	Details
Ring Style	Nature Inspired Engagement Ring
Metal Options	Silver, 9K, 14K, 18K Gold, Platinum
Available Colors	Yellow Gold, White Gold, Rose Gold, Silver, Platinum
Setting Type	Four-Prong with Accent Diamonds
Finish	High Polish
Occasion	Engagement, Anniversary, Bridal

About Lab Grown Diamonds

A princess is a square brilliant with crisp corners and sharp, high-contrast sparkle. It offers a contemporary edge and strong value per carat, and looks especially clean in channel or pavé bands that frame its straight lines.

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. The result is a diamond that looks and tests exactly as a natural one, with more carat and clarity for your money.

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 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 the accent diamonds remain the same?
Yes. The accent diamond design shown is included as part of the ring and remains integrated into the setting.

Which metals can I choose?
Silver, 9K / 14K / 18K gold in yellow, white or rose, and Platinum.

Is this ring suitable for everyday wear?
Yes. The secure four-prong setting and durable precious metal construction are designed for daily wear.

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