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Lab-grown diamond · Made to order

The Grand Marquise

Three-carat marquise lab-grown diamond ring with half eternity band

Three carats of marquise diamond. Impossible to miss, for $1,899.95.

This is the most reviewed design in the batch, and it's easy to see why. A three-carat marquise lab-grown diamond stretches long and sharp across her finger, with round side stones running halfway around the band. It's big, regal and made for a woman who wants to be noticed.

$1,899.95 Average US lab-grown engagement ring: $4,3001

Shop Pay 6 × $316.66/mo at 0% APR

  • The diamond. Lab-grown, marquise cut and every bit a diamond. Three carats of it.
  • The band. Round side stones run halfway around in a half eternity, so the sparkle follows the diamond down her finger.
  • The band. 2.5 microns of 18K gold over sterling silver. Every surface she sees is 18K.
01Metal

Metal color: Yellow

02Your diamond
3 ctmarquise cut
1 ct3 ct

Diamond color: White

Find her size
04EngravingOptional

We engrave exactly what you type, capitals and all.

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  • Free insured shipping in the US
  • Lifetime Warranty
  • Handmade for you in 10–15 business days

Where your money goes

Three carats. Without the three-carat bill.

At three carats, jeweler prices climb fast, and much of that climb pays for solid gold and the premium on a mined stone. The Grand Marquise skips both.

The center is a real lab-grown diamond. White comes in bright platinum vermeil, and yellow or rose in 18K gold vermeil, all over sterling silver. Solid 14K and 18K are there if you want them.

The biggest-looking ring at the table. Not the biggest bill.

Average US lab-grown engagement ring1$4,300
The Grand Marquise · 3 ct diamond · 18K gold vermeil$1,899.95

Prefer solid gold? 3 ct in 14K is $2,899.95.

And you don't have to pay it all today. Pay over time with Shop Pay Installments, subject to eligibility.

  1. The Knot 2026 Real Weddings Study: average spend on a lab-grown engagement ring by US couples married in 2025.

4.8 stars · 142 reviews

Over a hundred buyers can't be wrong.

These reviews, photos and videos come from buyers of the original three-carat marquise, made with a moissanite center. Same marquise silhouette, same half eternity band. Yours is built around a lab-grown diamond.

★★★★★

I didn't know I had a daughter until a month ago! She is 38 and beautiful. I wanted to give her something that she could wear daily and know that she is loved! It was the perfect gift and she loves it!!

Verified buyerVerified buyer · Original moissanite design
★★★★★

After not getting this ring for Christmas from my husband who misunderstood which ring I wanted, I ordered it myself Christmas afternoon. I have rheumatoid arthritis and know my hands don’t show off a ring as well as they once did, so I took a photo with more ring less fingers. The ring is beautiful, the customer service was unbelievably helpful, quick and went out of their way to please. I’m 66 and find shopping online exasperating but not with Awareness-Avenue!

Verified buyerVerified buyer · Original moissanite design
★★★★★

Beautiful ring!! My stone fell out and it was replaced right away. They apologize for the inconvenience.

Verified buyerVerified buyer · Original moissanite design

One ring, three kinds of shine

Long, bold and unforgettable.

Marquise-cut moissanite ring in silver with round side stones, front product view.The diamond

A lab-grown diamond is a diamond.

Same carbon crystal. Same hardness. Same brilliance. The Gemological Institute of America says lab-grown diamonds have essentially the same chemical, physical and optical properties as mined ones. No mine, no conflict question, no mining markup.

Silver marquise-cut moissanite ring worn on a model's hand resting on her knee.The shape

Made to lengthen her hand.

Pointed at both ends and slender through the middle, the marquise draws the eye along the finger, so her hand looks longer and more elegant. At three carats it's a true statement.

Marquise-cut moissanite ring in silver, angled view of the setting and round side stones.The band

Half eternity, full sparkle.

Round side stones run halfway around the band, adding light where it's seen and keeping the underside smooth and comfortable for everyday wear.

Her metal, her call

Yellow, rose or white. Same price, every one.

Bright white, warm yellow or soft rose. The Grand Marquise comes in all three, in vermeil or solid 14K and 18K gold, and the color you choose never changes the price.

Marquise cut

The marquise looks bigger than it weighs.

Carat for carat, the marquise shows more diamond on top than almost any other shape. At three carats, stretched across her finger and lit by a half eternity band, it's the kind of ring people notice from across the room.

White, or something rarer

A diamond in her color.

Classic white, or a blue, pink, yellow or green lab-grown diamond, picked for your ring one stone at a time. Before we set a colored diamond, we send you a video of your actual stone. You say yes, then we make the ring.

Marquise-cut moissanite ring in silver, angled view of the setting and round side stones.

Make it yours

Put it in writing.

Her name. The date. The coordinates of where you asked. Engrave up to 25 characters inside the band, outside, or both, from +$20.

Made to order

Made for her. Not pulled off a shelf.

  1. 01

    You design it

    Metal, color, diamond, size and words. Every choice is yours.

  2. 02

    We make it

    Handmade around your diamond in 10–15 business days.

  3. 03

    We ship it free

    Insured and tracked to your door, free in the US.

  4. 04

    It's covered for life

    Our Lifetime Warranty covers manufacturing and craftsmanship defects.

Planning a proposal date? Message us before you order and we'll plan the timing with you.

Good questions

Everything you want to know.

Something else? Message us. A real person answers.

Is a lab-grown diamond a real diamond?

Yes. It's carbon crystallized into diamond, just like a mined stone, with essentially the same chemical, physical and optical properties according to the GIA. It was grown above ground instead of dug out of it.

Can I pay over time?

Pay with Shop Pay Installments on eligible US orders paid in USD. Orders $50 to $999.99: 4 interest-free payments, every two weeks. Orders $1,000 to $30,000: 6 monthly payments at 0% APR, subject to approval. Other plans may include interest. You'll see your exact plan before you confirm.

Which metals and colors can I choose?

All three colors: yellow, rose and white. In yellow or rose, choose 18K gold vermeil, 14K solid gold or 18K solid gold. In white, choose Platinum vermeil, or 14K or 18K solid white gold. The color you pick never changes the price.

What is 18K gold vermeil?

A thick layer of 18K gold over sterling silver. Ours is 2.5 microns of 18K gold, more than ten times the minimum for ordinary gold plating. You get the color and glow of solid 18K gold on every surface, at a fraction of the price.

Can she wear it every day?

Yes, it's made for it. Treat it like any fine ring: slip it off for the gym, the pool and cleaning products, and it will keep its glow.

Can I go bigger, or smaller?

Yes. Tap + or − under Your diamond to go from 1 ct all the way to 3 ct. The price updates as you go.

How do colored diamonds work?

Choose blue, pink, yellow or green and we find a colored lab-grown diamond for your ring. Every colored diamond is one of a kind, so we send you a video of the actual stone. We make your ring only after you approve it.

How long will it take?

Your ring is handmade to order in 10–15 business days, then ships free, insured and tracked within the US. Have a date in mind? Message us before you order and we'll plan it with you. Shipping policy

What if I don't know her ring size?

Borrow a ring she wears on that finger and check it against our size guide, or message us and we'll help you work it out.

Can I change or cancel my order?

Yes, within 48 hours of ordering. After that, your ring is already being made. Our made-to-order policy covers returns and exchanges.

What does the warranty cover?

Our Lifetime Warranty covers manufacturing and craftsmanship defects with repair or replacement, and it follows the ring if it's a gift.

Why does it cost so much less than other diamond rings?

Because you're not paying for a solid gold band or a mining markup. The Grand Marquise puts your money into a three-carat center diamond and finishes the band in vermeil. Want solid gold? 14K and 18K are available.

Is three carats too much?

Not for a woman who loves a statement. The marquise's slim line keeps a big diamond graceful. Prefer smaller? Tap - under Your diamond and the price updates as you go.

Is it a good engagement ring?

Yes. It's a real three-carat diamond in a shape that stands apart from every round solitaire, on a band that sparkles where it counts.

The Grand Marquise

Go big. Ask her.

$1,899.95

Free insured US shipping · Lifetime Warranty · Handmade to order · Pay over time with Shop Pay

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Trustpilot

Pregúntale a cualquiera que haya hecho un pedido con nosotros.

Reseñas reales de clientes de Awareness Avenue en Trustpilot sobre todos nuestros productos.

1–3 of 30
RINGS
“Absolutely in love with my ring. Great quality and receiving a ton of compliments.”
Star CMar 2026 · US
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RINGS
“but now it fits PERFECTLY! I have gotten many compliments! Thank you!!!”
customerJun 2026 · US
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RINGS
“I surprised her with the ring while in the Bahamas and she loved it very, very much! It fit perfectly.”
Randy DullJun 2026 · US
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RINGS
“Good communication and my partner is so happy . The ring is stunning.”
Mr HensonAug 2026 · GB
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RINGS
“I was so excited to receive my 2K 3 Stone Ring. It exceeded my expectations. It’s stunning!!”
CynthiaMay 2026 · US
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RINGS
“My girlfriend loved the ring. Appears to be very well made and great quality.”
Daniel RearickApr 2026 · US
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RINGS
“The ring exceeded my expectations. It is exquisite”
MsSmokiejoeSept 2026 · GB
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RINGS
“I received my gorgeous ring yesterday!!! It is exactly what I was looking for”
ChristineSept 2026 · US
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RINGS
“The ring I bought was shipped quickly and is just so beautiful. I'll be a returning customer for sure.”
Jupiter NelsenJan 2026 · US
Original ↗
RINGS
“Got my ring today and is beautiful. Customer service was fantastic and I will definitely be ordering again.”
Colleen SmartMay 2026 · GB
Original ↗
RINGS
“My husband ordered me a ring for Christmas. It was beautiful and well made.”
Bethany St ClairJan 2026 · US
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RINGS
“My piece was exactly what I wanted and as perfect as it looked online”
Amina AjiyaJun 2026 · NG
Original ↗
RINGS
“is beautiful, even more so in person and in perfect condition! Exactly what I was hoping for!”
Christine VieleJun 2026 · US
Original ↗
GIFTING
“Usually, I am skeptical of ordering because it's never like you see in the picture but this exceeded my expectation”
Maria KennedyAug 2024 · US
Original ↗
GIFTING
“Then he saw the message inside and was genuinely so touched, and said he would “wear it always”. Nothing better than that!”
M HFeb 2026 · US
Original ↗
GIFTING
“It was heartfelt and she loved it! I got happy tears from giving this gift.”
Daneisha KimbleMay 2026 · US
Original ↗
GIFTING
“My son loves it and has not taken it off since I gave it to him.”
Catherine TufanoSept 2024 · US
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GIFTING
“My best friend loved the bracelet I bought her for her 50th birthday”
Karen LinnaneJul 2026 · GB
Original ↗
GIFTING
“As for the necklace itself. Nicely displayed, good quality, engraving was perfect.”
Mrs D - BasingstokeAug 2026 · GB
Original ↗
GIFTING
“I absolutely love the five bracelets that I bought for my close friends. They are of good quality and are very classy!”
MicheleAug 2026 · US
Original ↗
SERVICE
“Jewellery is great quality at affordable prices, Sizing Amazing and the Customers service I received has gone above an beyond.”
KellyMay 2026 · GB
Original ↗
SERVICE
“Helpful customer service. High quality jewelry for affordable prices. Shipping took longer than expected but was worth the wait.”
Greiciane silvaJul 2026 · US
Original ↗
SERVICE
“Customer satisfaction is paramount. It's why I am a repeat customer.”
SherryJul 2026 · US
Original ↗
SERVICE
“It is such a pleasure to shop with someone that actually cares, respects and values their customer.”
Susan 🙂Jul 2024 · US
Original ↗
SERVICE
“It’s rare to find a company that cares this much about their customers.”
NikkiSept 2025 · US
Original ↗
SERVICE
“I ordered the wrong size and needed to exchange for a different size; I received a prompt response, and the exchange process was simple.”
ANDREA HALLMar 2026 · US
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SERVICE
“I was treated with kindness and respect. They responded quickly and fixed my order.”
Diane DeverDec 2025 · US
Original ↗
SERVICE
“It was a pleasure doing business with them and it was extraordinary how they stand by their work”
Travis DavisAug 2024 · US
Original ↗
SERVICE
“They made sure I was taken care of to get the perfect ring for my fiance!”
Graham ShellenbergerJul 2025 · US
Original ↗
SERVICE
“they handled it very quickly and efficiently and sent out a replacement within 48 hours!”
Joy schekiraSept 2025 · US
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