East-West Marquise Cut Lab Grown Diamond Bypass Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

East-west marquise lab grown diamond bypass engagement ring in white gold with curved shoulders and four rounded prongs

1 of 8

$567.00

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

Understand your certificates →Certificate details →

Metal:

Choose your fit

Ring size Choose one

Forever, A & J

Live preview

Engraving 0 / 20

Complimentary · hand-engraved to order · adds about 3–4 days.

Arrives 7 business days to make, then 5–8 insured & tracked.

30-day returns Courier, insurance & duties covered. No restocking fee.

Duties & taxesPrepaid at checkout. Nothing extra to pay on delivery.

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

Marquise Cut · Solitaire

Center

Marquise Cut

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
Center diamond	Marquise Cut · approx. 10.5 × 5.2 mm · approx. 1.00 ct
Accent diamonds	None · 0 stones · 0.00 ct
Total diamond weight	Approx. 1.00 ct · 1 stone
Stone type	Lab Grown Diamond
Diamond quality	F color · VS1 clarity
Setting	Bypass · opposing curved shoulders around a center held by four rounded prongs
Orientation	East-west · the marquise’s length runs across the finger
Band	Plain polished shank · estimated 1.50 mm wide and 1.50 mm thick at the base
Shoulder width	Estimated 2.0–2.5 mm through the bypass section
Setting height	Estimated 4.5–5.0 mm
Finish · Occasion	High Polish · Engagement

At a glance

An east-west marquise lab grown diamond bypass engagement ring from Signora Jewels.

One approx. 1.00 ct marquise, 10.5 × 5.2 mm, in a Bypass setting with four rounded prongs; 0 accent diamonds, 0.00 ct.

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

Made to order in your chosen metal with a fixed, approximately 1.00 ct marquise center.

Signora Jewels turns the marquise sideways in this engagement ring and brings the shoulders around it in opposing curves. They sweep past the center rather than meeting head-on.

Four rounded prongs hold the approximately 1.00 ct center, measuring 10.5 × 5.2 mm, with one at each pointed end and two along the sides.

Design highlights

One marquise-cut center, approximately 1.00 ct and 10.5 × 5.2 mm
East-west orientation with the diamond running across the finger
Bypass shoulders curving around opposite sides of the center
Four rounded prongs, including one at each pointed end
Plain polished lower shank, estimated at 1.50 mm wide and 1.50 mm thick
No halo, side diamonds or diamond-set shoulders

The bypass shoulders broaden to an estimated 2.0–2.5 mm beside the center, then narrow to a 1.50 mm lower shank. No accent diamonds interrupt those polished curves.

About Lab Grown Diamonds

One marquise lab grown diamond supplies the full approximately 1.00 ct total, with its long axis running across the finger.

Metal, Care & Fit

Yellow and rose gold emphasize the opposing curves. Brush around the four rounded tips and shoulder junctions using the care guidance.

FAQ

What makes the shoulders around this east-west marquise a bypass design?
The two shoulders curve around opposite sides of the marquise instead of meeting it along one straight line. Their offset curves frame the horizontally mounted diamond without adding a halo or shoulder stones.

How much coverage do the prongs and bypass shoulders give the marquise?
A rounded prong sits over each marquise point, and two additional prongs hold the sides. The curved shoulders do not form a continuous metal enclosure; sections of the edge and the faceted top remain exposed. Protect the setting from hard knocks and remove the ring for lifting.

Can a straight wedding band sit flush beside the curved marquise shoulders?
The bypass section widens to an estimated 2.0–2.5 mm and curves around the horizontal center. A straight band’s fit depends on clearance along those curves, not just the 1.50 mm lower shank. Compare the completed rings to check for contact with the prongs or diamond.

How do I clean the joins between the bypass shoulders and the four prongs?
The four rounded prongs and curved shoulders create separate metal-to-stone junctions around the horizontal marquise. Use warm water, mild soap and a soft brush to clean those areas, then rinse thoroughly and pat dry without pulling cloth beneath the rounded tips.

Your cart is empty