Lozenge Lab Grown Diamond Solitaire Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

Lozenge step cut Lab Grown Diamond solitaire engagement ring in white gold with double-claw prongs and a wide knife-edge shank.

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$818.00

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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.

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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

Cut · Solitaire

Center

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.

Detail	In the photos	Customizable
Center diamond	Lozenge Step Cut · 12.26 × 8.11 × 4.50 mm · approx. 2.00 ct	1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct, 4.5 ct
Accent diamonds	None	—
Total diamond weight	Approx. 2.00 ct	Varies with center size
Stone type	Lab Grown Diamond	—
Setting	Four Double-Claw Prong Open Cathedral Basket with Wide Knife-Edge Shank	—
Finish · Occasion	High Polish · Engagement, Anniversary, Bridal	—

At a glance

A lozenge step cut lab grown diamond solitaire engagement ring from Signora Jewels.

An approximately 2.00 ct lozenge step cut diamond measuring 12.26 × 8.11 × 4.50 mm is secured in a four double-claw cathedral basket with an open gallery.

Made to order in 11 metals: Silver, 9K/14K/18K Gold (Yellow, White and Rose) and Platinum.

Each metal color is shown in the photos. Choose your preferred center diamond weight and metal from the options on this page.

The elongated lozenge step cut creates a bold geometric profile that immediately stands apart from traditional diamond shapes. At Signora Jewels, four double-claw prongs secure each point while the cathedral basket raises the diamond above a wide knife-edge shank. The open gallery leaves the pavilion exposed so light can travel through the long step facets from below.

The approximately 2.50 mm comfort-fit shank gives the ring a substantial feel while balancing the elongated center stone. The knife-edge profile catches light along the ridge without adding unnecessary width, and the approximately 6.90 mm setting height creates an open side profile that remains comfortable for everyday wear.

Browse our engagement rings, compare unique diamond shapes in the diamond stone guide, or explore precious metal options in our metal guide.

Design highlights

Lozenge step cut center shown at approximately 2.00 ct
Customizable center diamond from 1 ct to 4.5 ct
Four double-claw prong cathedral basket
Wide knife-edge comfort-fit shank
Open basket gallery for maximum light
Made to order in 11 precious metal options

The knife-edge band narrows visually toward the center, allowing the elongated lozenge diamond to dominate the design. From the side, the cathedral basket and open gallery create an airy profile that keeps the bold center stone from feeling heavy.

Diamond & Ring Details

Specification	Details
Center stone	Lozenge Step Cut · 12.26 × 8.11 × 4.50 mm · approx. 2.00 ct (shown)
Accent stones	None
Total weight / count	Approx. 2.00 ct · 1 Diamond
Setting	Four Double-Claw Prong Open Cathedral Basket with Wide Knife-Edge Shank
Center 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. Your selected center diamond weight determines the final proportions of the finished ring.

About Lab Grown Diamonds

The lozenge step cut combines a distinctive elongated outline with broad parallel facets that create clean mirror-like reflections instead of scattered sparkle. Every center diamond is F color, VS1 clarity and , selected to suit the proportions of this architectural solitaire.

Metal, Care & Fit

Available in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum. Clean beneath the open basket with warm water, mild soap and a soft brush to keep the pavilion free from everyday buildup. Inspect the double-claw prongs regularly to ensure each point remains securely protected.

FAQ

What makes a lozenge step cut different from other diamond shapes?
The lozenge step cut has a long geometric outline with pointed ends and broad step facets. It creates bold mirror-like reflections while offering a distinctive architectural appearance.

Why does this ring use a knife-edge shank?
The knife-edge profile creates a crisp ridge along the top of the band that reflects light without increasing visual bulk. It also balances the long proportions of the center diamond.

What do the double-claw prongs add?
Each point is secured by two fine claw tips instead of one. This provides additional protection while keeping the outline of the lozenge diamond sharply defined.

Can this ring be worn with a wedding band?
Yes. The cathedral basket allows many straight wedding bands to sit close, while contoured bands can follow the raised profile even more precisely.

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