Round Brilliant Lab Grown Diamond Hidden Halo Solitaire

IGI Report IncludedMade to OrderInsured Delivery

Classic round solitaire engagement ring available in rose gold, white gold, and yellow gold finishes

1 of 10

$532.00

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

Round Brilliant · Halo

Center

Round Brilliant

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 — choose your center diamond size and metal in the options on this page.

Detail	In the photos	Customizable
Center diamond	Round · approx. 2.22 ct	Yes — 1 to 4.5 ct
Metal & color	Yellow gold shown	Yes — 11 options
Hidden halo	25 round diamonds · approx. 0.05 ct	Included as shown
Total diamond weight	Approx. 2.27 ct · 26 diamonds	Varies with center size
Stone type	Lab Grown Diamond	Lab grown or natural
Setting	Six-prong basket with hidden halo	Scaled to your center size
Finish	High Polish	Included as shown
Occasion	Engagement, Anniversary, Bridal	Made to order for your moment

Diamond details

Shape	Size	Qty	Approx. ct
Round (center)	8.40 × 8.40 mm	1	2.22 ct
Round (hidden halo)	0.82 × 0.82 mm	25	0.05 ct
Total	—	26	2.27 ct

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

A proposal can feel both grand and deeply personal, and this round lab grown diamond engagement ring is designed for that exact in-between — classic from the top, quietly detailed from the side.

The round center sits in a six-prong basket that lets light reach the diamond from every angle, while a slim hidden halo adds a fine ring of sparkle beneath the stone.

Choose the center size that feels right, from 1 to 4.5 ct, then pair it with your favorite metal. Your ring is made to order, built around your selection rather than pulled from a shelf.

Design highlights

Round brilliant lab grown diamond center, customizable from 1 to 4.5 ct
Hidden halo with 25 round accent diamonds beneath the center
Six-prong basket setting for an open, secure profile
Clean solitaire look from above with extra sparkle from the side
Smooth high-polish band made for everyday wear
Approx. 2.27 ct total diamond weight in the photos
Made to order in 11 metal and color options

The hidden halo is the secret detail — invisible at first glance, then bright and romantic when the ring turns on the hand.

Diamond & Ring Details

Specification	Details
Center stone	Round · 8.40 × 8.40 mm · approx. 2.22 ct as shown
Hidden halo	25 round lab grown diamonds · 0.82 × 0.82 mm · approx. 0.05 ct total
Total weight / count	Approx. 2.27 ct · 26 diamonds as shown
Setting	Six-prong basket with hidden halo
Ring style	Hidden halo solitaire engagement ring
Customization	Center diamond from 1 to 4.5 ct; 11 metal options
Finish / Occasion	High Polish · Engagement, Anniversary, Bridal

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

About Lab Grown Diamonds

Cut with 57–58 facets engineered to return light to the eye, the round brilliant out-sparkles every other diamond shape and hides small inclusions well — one reason it remains the most loved shape for engagement rings.

Every Signora diamond is lab grown — chemically, physically and optically identical to a mined diamond and graded on the same 4C scale. The only difference is origin: a larger, cleaner stone for your budget, with documented origin and no mining footprint.

Metal, Care & Fit

Choose from Sterling Silver; 9K, 14K or 18K gold in yellow, white or rose; or Platinum. Sterling silver is bright and accessible, gold rises in richness from 9K to 18K, and platinum is naturally white, dense and hypoallergenic.

Order in your known ring size; most metals can be resized after purchase. Clean with warm water, mild soap and a soft brush, then pat dry. Remove before swimming, showering, lotion or perfume, and store separately to protect the polish.

FAQ

Can I choose a different center diamond size?
Yes. This ring is customizable from 1 to 4.5 ct, and the setting is made to suit the center size you select. The photos show a round center of approximately 2.22 ct.

What makes the hidden halo different from a regular halo?
A regular halo surrounds the center diamond from the top view, while this hidden halo sits beneath the center stone. You see a clean round solitaire from above, then a fine circle of sparkle when the ring turns to the side.

What is the total diamond weight shown in the photos?
The ring shown has approximately 2.27 ct total diamond weight: a 2.22 ct round center plus 25 hidden-halo diamonds totaling about 0.05 ct. Your final total changes with the center size you choose.

Is the six-prong setting secure for an engagement ring?
Yes. Six prongs help hold the round center evenly around the stone while keeping the basket open for light. It is a classic choice for a round solitaire because it balances security, symmetry and brilliance.

Are lab grown diamonds real diamonds?
Yes. Lab grown diamonds are real diamonds with the same chemistry, hardness and sparkle as mined diamonds, and they are graded on the same 4C scale by independent labs such as IGI.

Can this ring be resized?
Most metal options can be resized after purchase, depending on the adjustment needed. Choose your known size when ordering, and contact us if you need sizing help before or after your ring is made.

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