Cushion Cut Lab Grown Diamond Three-Stone Ring

IGI Report IncludedMade to OrderInsured Delivery

Cushion cut lab grown diamond three-stone engagement ring with 1.00 ct center, trillion side diamonds, baguette accents and polished yellow gold band.

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$720.00

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

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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.

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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

Cushion Cut · Three Stone

Center

Cushion Cut

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	Details
Center diamond	Cushion Cut · 6.2 × 5.8 mm · approx. 1.00 ct
Trillion side diamonds	2 Trillion Cut · approx. 0.30 ct total
Baguette accents	2 Baguette Cut · approx. 0.09 ct total
Round accents	Approx. 2 Round Brilliant · approx. 0.02 ct total
Total diamond weight	Approx. 1.41 ct · 7 diamonds
Stone type	Lab Grown Diamond
Setting	Three-Stone with prong-set cushion center, trillion sides and stepped baguette accents
Finish · Occasion	High Polish · Engagement, Bridal, Anniversary

Diamond details

Shape	Size	Qty	Weight (approx.)
Cushion Cut	6.2 × 5.8 mm	1	1.00 ct
Trillion Cut	Approx. 0.15 ct each	2	0.30 ct
Baguette Cut	Approx. 0.045 ct each	2	0.09 ct
Round Brilliant	Approx. 0.01 ct each	Approx. 2	0.02 ct
Total	—	Approx. 7	1.41 ct

At a glance

A cushion cut lab grown diamond three-stone engagement ring from Signora Jewels.

One 6.2 × 5.8 mm cushion center weighing approx. 1.00 ct, with two trillion diamonds, two baguettes and approx. two round accents totaling 0.41 ct. Approx. 1.41 ct combined.

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

Choose your metal and color from the options on this page. The center diamond is fixed at approximately 1.00 ct.

Look along the shoulders of this ring and you'll see three different diamond shapes working together. Signora Jewels places a 6.2 × 5.8 mm cushion center between two trillion cuts, then steps down to a pair of baguettes before the small round accents complete the transition into the band. It's a deliberate change in geometry, not a continuous row of identical stones.

The reference cushion weighs 1.00 ct, with approximately 0.41 ct in the six supporting diamonds. Each trillion points outward, while the baguettes sit lengthwise along the shoulders. The polished lower shank measures approximately 1.60 mm, keeping the metal light in appearance beneath the wider diamond-set section.

Design highlights

Cushion cut center diamond, approx. 1.00 ct
Two prong-set trillion diamonds, approx. 0.30 ct total
Two baguette accents, approx. 0.09 ct total
Two small round brilliant shoulder accents, approx. 0.02 ct total
Raised multi-prong center basket with stepped open gallery
Slim polished lower shank, approx. 1.60 mm wide

From the side, the raised center and individually secured side stones form an open, stepped gallery approximately 5.8–6.3 mm high. The shoulders widen to roughly 3.5–4.0 mm through the trillion and baguette section, then narrow into the polished band. Explore our three-stone rings or browse more engagement ring designs.

About Lab Grown Diamonds

The cushion center has rounded corners and a compact outline. The trillion cuts bring triangular facets beside it, while the baguettes reflect light in longer, straighter flashes. All diamonds are lab grown with F color and VS1 clarity specifications. Read our diamond and stone guide for more about how different cuts work together.

Metal, Care & Fit

Choose silver, 9K, 14K or 18K yellow, white or rose gold, or platinum. The prong-set trillion tips and stepped shoulder accents need attention during wear, especially around fitted sleeves and gloves. Clean gently with warm water, mild soap and a soft brush, working around the spaces between the cushion, trillion and baguette settings. Remove the ring before heavy lifting or activities that press against the side stones.

FAQ

How many diamonds are in this ring?
Approximately seven diamonds make up the design: one cushion center, two trillion sides, two baguettes and two small round brilliant accents. Their combined reference weight is approximately 1.41 ct.

Why are the trillion diamonds positioned beside the cushion?
The two trillion cuts sit directly against the cushion center, with their pointed ends facing outward. This creates a transition from the wider center setting to the slimmer baguette-set shoulders.

Does the band contain pavé diamonds?
No. The shoulder accents are individually set trillion, baguette and round diamonds rather than a continuous pavé row. The lower portion of the band is plain polished metal.

Will this ring sit flat against a wedding band?
The stepped side-stone settings extend across the shoulders and can create a gap beside a straight wedding band. A contoured wedding band can follow the three-stone profile more closely.

How should I care for the pointed trillion diamonds?
The trillion stones have prongs around their edges and pointed ends. Avoid impacts against those points and clean the junctions between the side stones and center basket with a soft brush.

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