Cushion Lab Grown Diamond Solitaire Ring

IGI Report IncludedMade to OrderInsured Delivery

Front view of a yellow gold round brilliant cut diamond solitaire engagement ring.

1 of 14

$451.00

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

Cushion Cut · Solitaire

Center

Cushion Cut

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	Cushion · 2.65 ct	Yes — 1 to 4.5 ct
Metal & color	Every color shown	Yes — 11 options
Total diamond weight	approx. 2.65 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 cushion lab grown diamond solitaire celebrates the beauty of a single exceptional stone. Softly rounded corners and generous proportions give the cushion cut a romantic look, while the clean solitaire setting keeps the focus entirely on the center diamond.

Four elegant claw prongs secure the diamond above a cathedral-style gallery, allowing light to enter from every angle. The smooth high-polish band creates a balanced profile that feels comfortable for everyday wear.

Made to order in your choice of center size and precious metal, this design is all about simplicity, proportion, and timeless beauty.

Design highlights

Cushion-cut lab grown diamond center
Classic solitaire design
Four-prong cathedral setting
Open gallery for maximum light performance
Comfort-fit high-polish band
Clean, minimalist profile
Customizable center sizes from 1 CT to 4.5 CT
Available in 11 metal options

Without halos or accent stones, every detail is dedicated to showcasing the cushion center. The result is a ring that feels refined, timeless, and effortlessly elegant.

Diamond Details

Specification	Details
Center Stone Shape	Cushion Cut
Center Stone Size	8.00 × 8.00 mm
Center Stone Weight (as shown)	Approx. 2.65 CT
Total Diamond Weight	Approx. 2.65 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, White, Rose Gold, Silver, Platinum
Setting Type	Four-Prong Cathedral
Finish	High Polish
Occasion	Proposal, Anniversary, Bridal

About Lab Grown Diamonds

A cushion's pillow outline and rounded corners give a softer, warmer glow, with larger facets that scatter light in broad flashes. It pairs naturally with solitaire and vintage-inspired designs and wears gently against the skin.

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.

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 on the same standards.

Does a solitaire make the diamond look larger?
Yes. With no surrounding accent stones, all attention is focused on the center diamond, allowing its size and brilliance to stand out.

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

Is this ring made to order?
Yes. Every ring is crafted specifically to your selected center size and metal choice.

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