1.5ct cushion cut diamond solitaire in 14K yellow gold, front view, four-prong head on a 2.5mm shank

1.5ct Cushion Cut Lab-Grown Diamond Solitaire Engagement Ring – 14K Gold

4 / 14K Yellow Gold
$1,830.00 USD
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1.5ct cushion cut diamond solitaire in 14K yellow gold, front view, four-prong head on a 2.5mm shank

1.5ct Cushion Cut Lab-Grown Diamond Solitaire Engagement Ring – 14K Gold

IGI Certified

$1,830.00 USD
Shipping calculated at checkout.

Images may appear slightly enlarged to highlight fine details. Please refer to product specifications for exact dimensions.

Metal14K Yellow Gold
Proccesing time.

Everything is made to order, and it takes 5-8 days to make each piece. After you order is ready expect 2-3 days to recieve you order.

Shipping

We ship priority with no additional cost, fully insured, and signature upon arrival is required.

Product Description

1.5 Carat Cushion Cut Lab-Grown Diamond Solitaire Engagement Ring

A 1.5ct cushion cut Lab-Grown Diamond, D–F color, VS+ clarity, IGI certified, four-prong set on a plain polished band in solid 14K gold. Made to order in 7 to 10 business days on my bench in Woodside, Queens.

How big is a 1.5 carat cushion cut?

Roughly 6.5mm across. A 1.5ct round measures about 7.4mm, so a cushion faces up a little smaller edge to edge — like a princess, it carries more of its weight in depth. What it gains is corner-to-corner spread and a softer outline, which is why a cushion reads wider and warmer on the hand than the millimeters imply.

What is a cushion cut, exactly?

A square with rounded corners and gently rounded sides — the name comes from the pillow shape. Unlike an emerald cut, which is a step cut, a cushion is brilliant-faceted: the facets radiate from the center the way a round's do, which is why it holds far more sparkle than its square outline suggests. It is the closest shape in the catalog to a round, with the geometry of a square.

Cushion or round at 1.5 carats?

A round is brighter and faces up marginally larger. A cushion is softer in outline, slightly less expensive per carat, and less expected — which for a lot of people is the whole appeal. If you like round but want something that does not look like everyone else's ring, this is the shape to look at. They are genuinely close cousins rather than opposites.

Are the corners fragile?

No, and this is one of the cushion's real advantages at larger sizes. The corners are rounded rather than pointed, so there is nothing sharp to chip against a doorframe the way a marquise or pear tip can. Four prongs hold it securely and no V-prongs or reinforced head are needed. Along with the emerald cut it is one of the most durable shapes you can wear every day.

What color and clarity is the diamond?

D through F, the colorless range, and VS+ clarity, eye-clean at any angle. Cushions are brilliant-faceted so they hide inclusions better than a step cut — but at 1.5 carats there is more surface for both tint and inclusions to show than there is at a carat, and cushions in particular can hold warmth in the corners. Staying in D–F keeps the whole stone even. The IGI report ships with the ring.

Which wedding band fits it?

A contoured band. There is a second gallery under the head — an extra rail of gold beneath the basket that carries the stone's weight and stops the prongs flexing over years of wear. It is why this head will still be tight in a decade, and most makers leave it out. It is also why a straight band will not seat: the band meets the gallery rather than the shank and stands off, leaving a gap under the stone. A curved band dips at the center, clears the gallery and nests flush. I make both to order, so tell me and I will cut the pair to meet properly — or start with the plain contour band or the pavé contour.

How long does it take, and can it be resized?

Made to order in 7 to 10 business days, sizes 4 through 9 including halves. Resizing is complimentary within 60 days of delivery, craftsmanship carries a lifetime warranty, and you have 14 days to return it if it is not right and you have not had it engraved. It ships fully insured in our signature suede pouch with the IGI report.

Want a different weight or shape?

The same ring runs at 1ct. To compare shapes, start with the diamond shape guide. Anything not on the site, I build custom.

Who makes it?

I do. One bench, one pair of hands, in a workshop in Woodside, Queens. Nothing here sits in a case waiting for a buyer — yours is cast, set and finished after you order it.

Product Specifications
SKU: BPQ-CUS-150-YG-040

Materials

Metal: Solid 14K Gold (Yellow, White, or Rose)
Hypoallergenic: Skin-Safe, Hypoallergenic
Origin: New York
Packaging: Pouch Bag + Polishing Cloth
Warranty: Lifetime against manufacturing defects

Stone Details

Stone Type: Lab Grown Diamonds
Certificate: IGI Certified
Shape: Cushion
Clarity: VS+
Color: D-F
Carat: 1.5ct
Setting: Round Prongs

Ring Details

Band Width: 2.5mm
Size Range: 4-9 US – For other sizes please contact us.

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Crafted in New York

Every BPQ piece begins as a custom design developed in our New York studio. Each ring is digitally modeled, then crafted in solid 14K gold using high-precision casting and finished by hand - polished, refined, and stone-set for lasting durability.

IGI diamond certiicate

Certificate of Authenticity

Certified Lab Grown Diamonds

Every diamond we use is independently IGI-certified for quality, authenticity, and brilliance.

You get full transparency, real grading, and a stone that’s guaranteed to shine for a lifetime.

Frequently asked questions

Is this 1.5ct Cushion Cut Lab-Grown Diamond Solitaire Engagement Ring – 14K Gold a certified lab-grown diamond?

Yes, all our diamonds 1ct+ are certified lab-grown, ethically sourced, and identical in quality to mined diamonds.

How long does production take?

Each ring is handcrafted to order in our NYC workshop. Production takes 7–10 business days.

Can I customize the metal or carat size?

Yes, contact us for custom sizing, metal options (14K yellow, white, or rose gold), and carat upgrades.

What does the lifetime warranty cover?

All pieces include a lifetime warranty covering craftsmanship defects. We also offer free resizing within the first year.

How do I find my ring size?

Use our [ring size guide] to measure at home, or visit our NYC workshop for a complimentary fitting.

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Free Shipping Within US

Free, fully insured U.S. shipping — secure and signature protected.

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Certified Diamonds

Each stone is accompanied by a verified IGI grading report, detailing its cut, color, clarity, and carat. Independent certification ensures the diamond you receive meets strict global standards.

Lifetime Warranty

Your jewelry is covered for workmanship for life against manufacturing defects, quality you can trust.

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