Princess Cut Halo Lab Grown Diamond Marquise Side Stone

IGI Report IncludedMade to OrderInsured Delivery

Diamond ring with a rose gold band on a white background

1 of 13

$1,149.00

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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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 · Halo

Center

Princess Cut

Carat

1 ct

Customizable

Metal

Customizable

Setting

Halo

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 · 2.03 ct	Yes — 1 to 4.5 ct
Metal & color	Every color shown	Yes — 11 options
Side stones & halo	52 diamonds · approx. 1.09 ct	Included as shown
Total diamond weight	approx. 3.12 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.

A princess cut lab grown diamond engagement ring brings together bold geometry and exceptional sparkle, and this design adds even more presence with a diamond halo and marquise-accented shoulders.

At the center sits a square princess cut diamond secured by four claw prongs, framed by a halo of round lab grown diamonds that amplify the size and brilliance of the centerpiece. Marquise side stones create a graceful three-stone profile that catches light from every angle.

Made to order in your choice of metal and center size, this ring is crafted for the proposal moment today and comfortable everyday wear long after.

Design highlights

Princess cut center lab grown diamond
Diamond halo surrounding the center stone
Marquise side stones for a distinctive three-stone look
Four-prong center setting
Open gallery allows light beneath the center diamond
High-polish finish for maximum shine
Center diamond customizable from 1–4.5 ct
Available in 11 precious metal options

The combination of a square princess center, sparkling halo, and marquise accents creates a balanced design that feels both architectural and romantic. From across the room the center commands attention; up close, the details reveal themselves one by one.

Diamond Details

Specification	Details
Center Stone Shape	Princess Cut
Center Stone Size	6.96 × 6.96 mm
Center Stone Weight (as shown)	Approx. 2.03 CT
Halo Diamonds	16 round diamonds (1.00 mm) · approx. 0.06 CT
Accent Diamonds	20 round diamonds (1.20 mm) + 8 round diamonds (1.40 mm) + 8 marquise diamonds (5.00 × 2.50 mm) · approx. 1.03 CT
Total Diamond Weight	Approx. 3.12 CT
Total Diamond Count	53
Stone Type	Lab Grown Diamond
Setting	Four-Prong Halo Three Stone

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

Ring Specifications

Feature	Details
Ring Style	Halo Three Stone
Metal Options	Silver, 9K, 14K, 18K Gold, Platinum
Available Colors	Yellow Gold, White Gold, Rose Gold, Silver, Platinum
Setting Type	Halo with Marquise Side Stones
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, 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 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 halo make the center diamond look larger?
Yes. The surrounding halo creates additional visual spread and sparkle, making the center diamond appear larger than a solitaire of the same size.

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

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