Round Lab Grown Diamond Cathedral Twisted Halo Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

Round Lab Grown Diamond Twisted Halo Engagement Ring with Infinity Pavé Shank in Yellow Gold

1 of 8

$958.00

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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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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.

Detail	In the Photos	Customizable
Center Diamond	Round Brilliant · 6.40–6.50 mm · Approx. 1.00 ct	1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct, 4.5 ct
Halo Diamonds	18 Round Brilliant · Approx. 0.15 ct	Scale with selected center size
Shank Diamonds	32 Round Brilliant · Approx. 0.19 ct	Scale proportionally
Total Diamond Weight	Approx. 1.34 ct	Varies with selected center size
Stone Type	Lab Grown Diamond	—
Setting	Four-Prong Round Halo with Cathedral Open Gallery & Twisted Infinity Micro Pavé Shank	—
Finish · Occasion	High Polish · Engagement, Anniversary, Bridal	—

At a glance

A round lab grown diamond twisted halo engagement ring from Signora Jewels.

The ring shown features a 6.40–6.50 mm round brilliant lab grown diamond weighing approximately 1.00 ct. Eighteen halo diamonds and thirty-two pavé diamonds total approximately 0.34 ct, bringing the total diamond weight to approximately 1.34 ct.

Made to order in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum.

Select your preferred center diamond size and precious metal using the options on this page.

The round brilliant center is secured by a four-prong basket that rises from a cathedral gallery, allowing light to reach the pavilion while keeping the diamond elevated above the shoulders. A close-fitting halo surrounds the center to emphasize its circular outline and increase its visual spread without changing the classic proportions.

The infinity shank twists beneath the halo before flowing into a polished comfort band. Thirty-two round brilliant diamonds follow the twisting shoulders, creating continuous sparkle that naturally draws attention toward the center stone. Signora Jewels crafts every ring to order in your selected precious metal and center diamond size.

Design Highlights

Customizable round brilliant lab grown diamond from 1 ct to 4.5 ct
Four-prong cathedral basket setting
Round brilliant halo with eighteen accent diamonds
Twisted infinity micro pavé shank
Open cathedral gallery
High polish finish

Browse more Halo Engagement Rings, explore our Engagement Ring Guide, or compare precious metals using our Metal Guide.

Diamond & Ring Details

Specification	Details
Center Diamond	Round Brilliant · 6.40–6.50 mm · Approx. 1.00 ct (shown)
Halo Diamonds	18 Round Brilliant · Approx. 0.15 ct
Shank Diamonds	32 Round Brilliant · Approx. 0.19 ct
Total Stones	51
Total Diamond Weight	Approx. 1.34 ct
Center Diamond Options	1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct and 4.5 ct
Finish	High Polish

Measurements are approximate. Final dimensions vary according to the selected center diamond size.

About Lab Grown Diamonds

The round brilliant cut is prized for its exceptional light return and balanced sparkle. The surrounding halo enhances the apparent size of the center, while the infinity pavé shank adds flowing brilliance that complements the classic round silhouette.

Metal, Care & Fit

Available in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum. Clean beneath the cathedral basket, around the halo and along the pavé-set infinity shank using warm water, mild soap and a soft brush to keep every diamond bright.

FAQ

What does the infinity shank add to the design?
The twisting shoulders create a flowing profile that naturally leads the eye toward the center while providing additional pavé sparkle.

Can I choose a different center diamond size?
Yes. This design is available with center diamond options from 1 ct through 4.5 ct while maintaining the same halo and infinity shank style.

Does the halo make the center diamond appear larger?
Yes. The eighteen surrounding round diamonds frame the center stone, increasing its visual presence while preserving its round outline.

Is the cathedral setting suitable for everyday wear?
Yes. The cathedral shoulders reinforce the basket, and the polished lower shank provides a comfortable fit for daily wear.

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