Oval Lab Grown Diamond Vintage Three-Stone Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

1 of 8

$785.00

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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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Metal:

Center Diamond:

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Ring size Choose one

Forever, A & J

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Engraving 0 / 20

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

For ChristmasOrder by Monday 30 November for delivery before 25 December. Holiday gift guide

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

Oval Cut · Three Stone

Center

Oval Cut

Carat

1 ct

Customizable

Metal

Customizable

Setting

Three Stone

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	Oval Cut · 9.25 × 6.45 mm · approx. 1.50 ct	1–4.5 ct
Side diamonds	2 round diamonds · approx. 0.09 ct total	Fixed three-stone layout
Total diamond weight	approx. 1.59 ct · 3 diamonds	Varies with selected center
Stone type	Lab Grown Diamond	—
Setting	Four-Prong Three-Stone with open gallery and vintage filigree shoulders	—
Finish · Occasion	High Polish · Engagement, Anniversary	—

Diamond details

Shape	Role	Qty	Weight (approx.)
Oval Cut	Center · 9.25 × 6.45 mm	1	1.50 ct
Round Cut	Flanking side stones	2	0.09 ct total
Total	Center + side stones	3	1.59 ct

At a glance

An oval lab grown diamond vintage three-stone engagement ring from Signora Jewels.

A 1.50 ct, 9.25 × 6.45 mm oval center is flanked by 2 round diamonds totaling approx. 0.09 ct. Approx. 1.59 ct total.

Made to order in 11 metals: silver, 10K/14K/18K gold (yellow, white, rose) and platinum.

Choose your center weight and metal for this made-to-order ring.

Signora Jewels places the 9.25 × 6.45 mm oval between two round side diamonds, giving this three-stone engagement ring a clear step down in scale from center to shoulders. The upper shank carries carved filigree work instead of another row of stones, so the two rounds stay distinct beside the oval.

The center rises approximately 6.5–7.0 mm above an open gallery. At the base, the shank measures about 1.80 mm wide and 1.80 mm thick, while the engraved shoulders widen to roughly 3.5–4.0 mm near the side stones.

Design highlights

1.50 ct oval center in the reference design
Center measures approx. 9.25 × 6.45 mm
2 round side diamonds totaling approx. 0.09 ct
Four-Prong Three-Stone setting
Open elevated gallery beneath the center
Engraved vintage filigree shoulders

The two round diamonds sit exactly where the filigree shoulders meet the center, so they act as a short transition instead of extending into a pavé band. The rest of the shoulder detail is cut into the metal, leaving the oval as the longest shape on the finger.

Diamond & Ring Details

Specification	Details
Center stone	Oval Cut · 9.25 × 6.45 mm · approx. 1.50 ct in the photos
Side diamonds	2 round diamonds · approx. 0.09 ct total
Total diamond weight	approx. 1.59 ct in the photographed configuration
Diamond count	3
Setting	Four-Prong Three-Stone with open gallery and vintage filigree shoulders
Center options	1, 1.5, 2, 2.5, 3, 3.5, 4 and 4.5 ct
Finish	High Polish

Measurements are approximate; your selected center weight sets the final diamond dimensions and total weight.

About Lab Grown Diamonds

The oval reference center measures 9.25 mm long, giving it more north-to-south spread than the two round side stones. See the diamond stone guide for more on oval proportions, cut and shape.

Metal, Care & Fit

Yellow and rose gold make the engraved shoulder pattern easier to read; white gold and platinum keep more attention on the three diamonds. Compare options in the metal guide. Clean beneath the open gallery and inside the carved shoulder recesses with warm water, mild soap and a soft brush.

FAQ

What makes this a three-stone engagement ring?
The design uses one oval center with one round diamond on each side. Those two rounds total approximately 0.09 ct and sit directly between the center setting and engraved shoulders.

How high does the oval center sit?
The setting rises approximately 6.5–7.0 mm. The open gallery leaves visible space beneath the oval and separates it from the filigree shoulders.

Why are the side stones round instead of oval?
The two round diamonds create a shorter, wider transition into the shoulders. Their circular outlines contrast with the 9.25 mm elongated oval rather than repeating its shape.

Will a straight wedding band sit completely flush?
The elevated gallery and three-stone structure can leave a small gap beside a straight band. A contoured band follows the center setting more closely.

How should the engraved shoulders be cleaned?
Use a soft brush inside the carved filigree recesses and beneath the center gallery. Those narrow engraved areas collect more residue than the polished lower band.

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