Round Lab Grown Diamond Solitaire Signet Ring (Four-Prong)

IGI Report IncludedMade to OrderInsured Delivery

round diamond solitaire signet ring in yellow gold

1 of 12

$1,472.00

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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. 0.85 ct lab-grown diamond · IGI report · Signora Certificate included.

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Metal:

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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.

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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

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.

Detail	Details
Ring style	Men's Solitaire Signet Ring
Center diamond	Round · 6.00 mm · Approx. 0.85 ct
Total diamond weight	Approx. 0.85 ct
Stone type	Lab Grown Diamond
Setting	Four-Prong
Finish	High Polish
Occasion	Wedding, Gift

Made to order — select your preferred metal using the options above. Want something custom?

Customize your jewelry here.

Bold, clean and unmistakably modern, this men's solitaire signet ring showcases a brilliant round lab grown diamond suspended in a contemporary four-prong setting. The wide polished band features subtle sculpted detailing that naturally draws the eye toward the center stone while maintaining a refined masculine profile.

The elevated four-prong design allows maximum light to enter the diamond, enhancing its brilliance from every angle. Smooth shoulders and a comfort-fit interior make this ring ideal for daily wear while preserving the timeless elegance expected from a classic signet-inspired design.

Crafted to order in your chosen precious metal, this ring delivers a confident statement without unnecessary ornamentation. Its balanced proportions make it suitable as a wedding ring, milestone gift or signature everyday piece.

Design Highlights

One round lab grown diamond
Approx. 0.85 ct total diamond weight
Contemporary four-prong solitaire setting
Modern men's signet-inspired design
Wide comfort-fit band
Architectural shoulder detailing
High-polish finish
Available in Silver, 9K, 14K, 18K Gold and Platinum

Designed for men who appreciate understated luxury, this ring combines bold metalwork with the timeless brilliance of a round diamond. The sleek silhouette and open prong setting create a sophisticated look that transitions effortlessly from everyday wear to life's most important occasions.

About Lab Grown Diamonds

Round brilliant diamonds are renowned for their exceptional sparkle thanks to their precision-cut facets that maximize light return. Their timeless appearance makes them the perfect centerpiece for a modern men's signet ring.

Every Signora diamond is lab grown—chemically, physically and optically identical to a mined diamond while offering exceptional beauty, outstanding value.

Metal, Care & Fit

Available in Silver, 9K, 14K and 18K Gold in Yellow, White and Rose, as well as Platinum. The comfort-fit interior provides excellent everyday comfort, while the secure four-prong setting keeps the diamond protected. Clean regularly with warm water, mild soap and a soft brush before drying with a lint-free cloth.

FAQ

What diamond is featured in this ring?
This ring features one round lab grown diamond measuring approximately 6.00 mm with a total weight of approximately 0.85 carat.

Is this suitable as a men's wedding ring?
Yes. The substantial signet profile and timeless solitaire design make it an excellent choice for a modern men's wedding or commitment ring.

Why is the diamond held with four prongs?
The four-prong setting securely holds the diamond while allowing more light to enter the stone, maximizing its brilliance and sparkle.

Are lab grown diamonds real diamonds?
Absolutely. Lab grown diamonds have the same chemical, physical and optical properties as mined diamonds and are graded by the same standards.

Which precious metals are available?
Choose from Silver, 9K, 14K and 18K Gold in Yellow, White and Rose, along with Platinum. Every ring is individually made to order.

Can this ring be personalized?
Yes. We can create bespoke versions with engraving, alternative finishes or other custom modifications through our custom jewelry service.

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