The 3.18-Carat Lab-Grown Elongated Cushion Cut Engagement Ring

by Benz Diamonds

3.18ct Lab-Grown Elongated Cushion Cut Diamond Engagement Ring by Benz & Co Diamonds featuring a two-tone 14K gold band with hidden halo.
Side view of the 3.18ct Lab-Grown Elongated Cushion Cut Diamond Engagement Ring highlighting the 1.80mm band and medium profile comfort fit
Close-up of the 3.18ct Lab-Grown Elongated Cushion Cut Diamond Engagement Ring showcasing the white gold hidden halo and yellow gold shank.
3.18ct Lab-Grown Elongated Cushion Cut Diamond Engagement Ring by Benz & Co Diamonds featuring a two-tone 14K gold band with hidden halo.
Stone:
Lab grown elongated cushion cut diamond
Carat (central stone):
3.18 ct
Color:
E
Clarity:
VS1
Band Width:
14k White Gold
Made In:
USA
Ring story · Big & sustainable

Over three carats,
and eco-conscious.

The 3.18-Carat Elongated Cushion Cut Engagement Ring by Benz Diamonds pairs a big, brilliant lab-grown cushion diamond with a sophisticated two-tone setting and a subtle hidden halo. Modern elegance and sustainable luxury — a real statement piece, made responsibly.

Who she is

For the woman who wants
wow factor, done right.

This is the one I pull for someone who dreams of a big, brilliant centre stone but wants it done the modern, sustainable way. Over three carats of lab-grown diamond delivers serious presence with a clear conscience.

She loves a flattering, elongating silhouette and a little extra sophistication — the two-tone setting and hidden halo give her exactly that.

Modern elegance with a meaningful, sustainable touch — a statement stone you can feel good about.
What sets it apart

Three things that make it
a statement.

01

A 3.18-carat elongated cushion

The lab-grown elongated cushion cut diamond (E colour, VS1) is eye-catching and timeless, its long silhouette elongating the finger while maximising brilliance. Over three carats of presence, beautifully clean.
Why lab-grown
Lab-grown means over three carats of diamond, responsibly made — serious wow factor with a far lighter footprint and friendlier price.
02

A sophisticated two-tone setting

The two-tone solitaire setting adds depth and sophistication, mixing metals for a subtle, modern contrast that sets it apart from a standard solitaire.
03

A subtle hidden halo

A hidden halo tucked beneath the centre stone adds extra sparkle from the side profile, without cluttering the clean top-down look. A refined detail that makes the diamond glow even more.
The maker

About Benz Diamonds.

Benz Diamonds is known for lab-grown diamond engagement rings that pair impressive size and quality with modern design and eco-conscious craftsmanship. This elongated cushion is a great example — a big, brilliant statement made sustainably.

In real life

A statement stone that’s
built for real life.

Diamonds — lab-grown or mined — are the hardest material there is, so this big cushion stands up beautifully to daily wear, and the hidden halo sits protected beneath the stone. A large diamond deserves an occasional wipe to keep it dazzling, and getting her size right matters. Then it’s a show-stopping, everyday-wearable ring.

Common questions

FAQ — what people
actually ask me.

Are lab-grown diamonds real diamonds?

Yes — they’re chemically and optically identical to mined diamonds. It’s how you get over three carats here, responsibly and far more affordably than a mined equivalent.

What is an elongated cushion cut?

It’s a cushion cut with a longer, rectangular silhouette — soft, rounded corners with a flattering, finger-lengthening shape that maximises brilliance.

What’s a hidden halo?

A ring of small diamonds set beneath the centre stone, visible from the side — it adds extra sparkle and detail without cluttering the clean top view.

Is a 3-carat ring practical for everyday?

Yes, with a little awareness. Diamonds are extremely durable, and while a big stone deserves an occasional clean and care, it’s absolutely wearable day to day.

Not sure if this is
the one?

Tell me about her — her profession, her life, her taste. I’ll personally curate 10 rings chosen around your brief.

Get a personal curation →