Round Cut Lab Grown Diamond Four-Prong Anniversary Ring

Signora Jewelry Certificate IncludedMade to OrderInsured Delivery

White gold lab grown diamond anniversary band with alternating marquise and round diamonds in open prong settings.

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$894.00

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Product documentation Signora Jewelry Certificate Included A Signora Jewelry Certificate lists the finished-piece and material details supplied for this design. Finished-piece and material details · Signora Jewelry 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.

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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 ·

Center

Round Brilliant

Metal

Customizable

Setting

Detail	Details
Center diamond	Round · 3.50 mm · approx. 0.165 ct
Round diamonds	5 diamonds · 3.50 mm · approx. 0.825 ct total
Marquise diamonds	4 diamonds · 6.15 × 3.10 mm · approx. 0.900 ct total
Total diamond weight	Approx. 1.725 ct · 9 diamonds
Stone type	Lab Grown Diamond
Setting	Four-Prong with alternating round and marquise diamonds
Design	Diamond-set upper band with plain polished lower shank
Finish · Occasion	High Polish · Anniversary, Wedding, Everyday

Diamond details

Shape	Size	Qty	Weight (approx.)
Round	3.50 mm	5	0.825 ct
Marquise	6.15 × 3.10 mm	4	0.900 ct
Total	—	9	1.725 ct

At a glance

A round and marquise lab grown diamond anniversary ring from Signora Jewels.

Five round diamonds measuring 3.50 mm and four marquise diamonds measuring 6.15 × 3.10 mm alternate across the upper band. Nine diamonds total approximately 1.725 ct. Prong setting.

Made to order in 11 metals: silver, 9K/14K/18K gold (yellow, white, rose) and platinum.

Choose your preferred metal from the options on this page. The diamond arrangement is fixed.

Nine diamonds run across the upper half of this Signora Jewels anniversary ring. A 3.50 mm round diamond occupies the center, with four marquise and four additional round diamonds alternating toward the shoulders. Each marquise lies horizontally, creating an elongated line between the round stones.

The individual prong settings leave the sides of the diamonds visible. Beneath the diamond-set section, the ring transitions into a plain polished shank, with no stones extending around the underside.

Explore more diamond rings or compare your options in our metal guide.

Design highlights

Nine lab grown diamonds totaling approximately 1.725 ct
Five round diamonds, each 3.50 mm and approximately 0.165 ct
Four marquise diamonds, each 6.15 × 3.10 mm and approximately 0.225 ct
Alternating round and horizontally positioned marquise diamonds
Individual prong settings with an open gallery beneath the stones
Diamond-set upper section with a plain polished lower band

The alternating cuts give this ring its particular rhythm. The round diamonds break up the longer marquise outlines, while the nine-stone arrangement follows the curve of the finger. It makes a substantial anniversary band without placing diamonds underneath the hand.

About Lab Grown Diamonds

Round and marquise cuts reflect light differently. The five round diamonds create concentrated points of brilliance, while the four elongated marquise stones extend the diamond line across the finger.

All nine stones are lab grown diamonds, with F color and VS1 clarity.

Metal, Care & Fit

Choose silver, platinum, or 9K, 14K or 18K gold in yellow, white or rose. The open prong settings expose the sides of the diamonds, while the plain lower shank provides an uninterrupted metal surface against the underside of the finger.

Clean with warm water, mild soap and a soft brush. Work gently between the alternating stones and beneath the open settings, where residue collects. Follow our jewelry care guide for ongoing maintenance.

FAQ

Does this anniversary ring have diamonds all the way around?
No. Nine diamonds cover the upper section of the band, while the underside remains plain polished metal. The diamond arrangement is concentrated across the visible part of the finger.

Are all nine diamonds the same shape?
No. The design alternates five round diamonds with four marquise diamonds. Each round measures 3.50 mm, while each marquise measures 6.15 × 3.10 mm.

Can I stack this ring with an engagement ring?
The diamond-set section follows the curve of the finger and transitions into a plain lower band. It can be stacked, although raised engagement-ring settings can create a gap between the two rings. A contoured companion band gives a closer fit.

Which metal color works with the alternating diamond shapes?
White gold and platinum create a continuous bright appearance around the diamonds. Yellow and rose gold provide more visible contrast between the round and marquise settings, making the alternating arrangement more apparent.

How should I clean the spaces between the marquise and round diamonds?
The individual prong settings leave openings between adjacent stones. Use a soft brush with mild soapy water to clean beneath the marquise diamonds and around the round stones. Check the prongs periodically for movement or damage.

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