Round Lab Grown Diamond Marquise Bypass Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

round diamond bypass engagement ring in yellow gold

1 of 12

$569.00

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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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 · Pavé

Center

Round Brilliant

Carat

1 ct

Customizable

Metal

Customizable

Setting

Pavé

An independent IGI grading report is included when the selected individual lab-grown center or primary diamond is 0.50 ct or larger.

The rose gold render shows the finished design — choose your center size and metal in the options on this page.

Detail	In the photos	Customizable
Ring style	Split-shank bypass engagement ring	Included as shown
Center diamond	Round · 8.00 mm · Approx. 2.00 ct	Yes — 1 to 4.5 ct
Accent diamonds	16 round and marquise diamonds · Approx. 0.272 ct	Included as shown
Total diamond weight	17 diamonds · Approx. 2.272 ct	Varies with the center selected
Metal & color	Rose gold render	Yes — 11 options
Stone type	Lab Grown Diamond	Lab Grown Diamond
Setting	Four-prong basket with U-cut accents	Scaled to suit the selected center
Ring size shown	US 7	Customer selects
Finish	High Polish	Included as shown

Diamond details

Shape	Size	Qty	Approx. ct
Round (center)	8.00 mm	1	2.000
Marquise (side accents)	3.50 × 2.00 mm	2	0.080
Round (larger shoulder accents)	1.80 mm	4	0.100
Round (shoulder accents)	1.30 mm	8	0.080
Round (fine accents)	1.10 mm	2	0.012
Total	—	17	2.272

Made to order — the price updates with your selection. Want fully bespoke?
Customize your jewelry here.

A graceful sense of movement gives this round lab grown diamond engagement ring its character. The brilliant center rises above a split bypass shank, where two diamond-set paths curve toward the stone from opposite directions.

Marquise accents sit close to the center like tapered leaves, adding an elongated flash between the round diamond and the pavé shoulders. The asymmetrical arrangement feels modern and fluid while keeping the center stone unmistakably prominent.

Choose your preferred center size and metal, and the four-prong basket is made to order around your selection while preserving the ring’s balanced bypass silhouette.

Design highlights

Round lab grown center diamond, customizable from 1 to 4.5 ct
8.00 mm center shown at Approx. 2.00 ct
Two marquise side diamonds adding tapered brilliance
Fourteen round diamonds continuing across the split shoulders
Approx. 0.272 ct total accent diamond weight
Open four-prong basket that keeps the center visually bright
Flowing bypass design with an asymmetric split shank
Made to order in 11 metal and color combinations

The marquise accents are the defining touch: their pointed outlines echo the direction of the bypass curves, drawing the eye naturally toward the round center.

Diamond & Ring Details

Specification	Details
Center diamond shown	Round · 8.00 mm · Approx. 2.00 ct
Marquise accents	2 diamonds · 3.50 × 2.00 mm · Approx. 0.080 ct
Larger round accents	4 diamonds · 1.80 mm · Approx. 0.100 ct
Round shoulder accents	8 diamonds · 1.30 mm · Approx. 0.080 ct
Fine round accents	2 diamonds · 1.10 mm · Approx. 0.012 ct
Accent total	16 diamonds · Approx. 0.272 ct
Total shown	17 diamonds · Approx. 2.272 ct
Setting	Four-prong basket with U-cut round and marquise accents
Ring size shown	US 7
Finish / occasion	High Polish · Engagement, Anniversary

Measurements and diamond weights are approximate. The final total diamond weight varies with the center size selected.

About Lab Grown Diamonds

A round brilliant uses 57–58 facets to return intense light to the eye, giving the center a lively, balanced sparkle. The marquise accents add a different rhythm, with elongated outlines that direct the eye inward toward the center stone.

Every diamond is lab grown — chemically, physically and optically identical to a mined diamond and graded on the same 4C scale. Lab grown diamonds offer documented origins and no mining footprint while providing the same hardness, brilliance and lasting beauty.

Metal, Care & Fit

Choose Sterling Silver, 9K, 14K or 18K gold in yellow, white or rose, or naturally white Platinum. Gold becomes richer in color as its purity rises, while Platinum is dense, durable and naturally hypoallergenic.

Order in your known ring size; most versions can be resized, although the diamond-set split shoulders may limit larger adjustments. Clean with warm water, mild soap and a soft brush, then pat dry. Remove before swimming, strenuous activity or applying lotion, and have the prongs inspected periodically.

FAQ

Can I choose a different round center size?
Yes. The center is available from 1 to 4.5 ct, and the four-prong basket is scaled to fit your selection. The design shown uses an 8.00 mm round diamond weighing Approx. 2.00 ct.

What makes this a bypass engagement ring?
The two sides of the shank curve toward the center from opposite directions rather than meeting in one straight line. This creates the flowing, open look visible around the round center and marquise accents.

What is the total diamond weight of the ring shown?
The shown design contains 17 diamonds totaling Approx. 2.272 ct. This includes the Approx. 2.00 ct round center and 16 accent diamonds totaling Approx. 0.272 ct.

What role do the marquise diamonds play in the design?
One marquise accent sits on each side of the center, following the direction of the split shank. Their tapered shape creates a smooth visual transition between the round center and the smaller shoulder diamonds.

How is the round center diamond secured?
The center is held in an open four-prong basket. This keeps the round outline visible and allows light to enter around the diamond while providing secure contact at four points.

Can the ring be resized after purchase?
Moderate resizing may be possible depending on the metal and adjustment required. Because diamonds extend along the split shoulders, contact us before ordering when you are between sizes or expect a significant size change.

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