Round Cut Lab Grown Diamond Classic Solitaire

IGI Report IncludedMade to OrderInsured Delivery

Gold ring with a large diamond on a white background

1 of 13

$886.00

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 · Solitaire

Center

Round Brilliant

Carat

1 ct

Customizable

Metal

Customizable

Setting

Solitaire

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	Round · 1.92 ct	Yes — 1 to 4.5 ct
Metal & color	Every color shown	Yes — 11 options
Total diamond weight	approx. 1.92 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 round lab grown diamond engagement ring never goes out of style, and this design showcases that timeless appeal through clean lines, balanced proportions, and a bold center stone. The substantial band tapers gracefully toward the diamond, creating a refined and elegant profile.

Set in a classic four-prong solitaire setting, the round center diamond is elevated to maximize light return and brilliance. The cathedral shoulders gently rise toward the center, offering both visual presence and added support for the setting.

Made to order in your chosen metal and center size, this ring is designed for those who appreciate a traditional solitaire with a modern, sculpted silhouette.

Design highlights

Round brilliant lab grown diamond center stone
Classic four-prong solitaire setting
Cathedral-style shoulders for elegant support
Smooth comfort-fit band profile
Clean and timeless engagement ring design
High-polish finish for maximum shine
Available in 11 precious metal options
Center diamond customizable from 1 CT to 4.5 CT

The elevated cathedral profile creates beautiful side views while keeping attention firmly on the center diamond. Its clean architecture makes it a versatile design that pairs effortlessly with wedding bands.

Diamond Details

Specification	Details
Center Stone Shape	Round Cut
Center Stone Size	8.00 × 8.00 mm
Center Stone Weight (as shown)	Approx. 1.92 CT
Total Diamond Weight	Approx. 1.92 CT
Total Diamond Count	1
Stone Type	Lab Grown Diamond
Setting	Four-Prong Cathedral Solitaire

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

Ring Specifications

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

About Lab Grown Diamonds

A round brilliant is cut with 57–58 facets engineered to recycle light back to the eye, which is why it out-sparkles every other shape and hides small inclusions well. It is the most requested engagement silhouette and sits comfortably in solitaire, halo, or pavé settings without fighting the 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. 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. They are chemically, physically, and optically identical to mined diamonds and are graded using the same standards.

What makes a cathedral setting special?
The shoulders rise toward the center stone, creating an elegant profile while adding structural support to the setting.

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

Will a wedding band sit alongside this ring?
Yes. The classic solitaire design pairs beautifully with a wide variety of wedding bands.

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