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Shown With 8mm Round Aquamarine

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Shown With 8mm Round Aquamarine

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Shown With 8mm Round Aquamarine on Size 6 Hand

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Shown With Diamond

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Aquamarine Trillion Three Stone Diamond Engagement Ring with Hadley Contoured Diamond Ring in 18K White Gold Set with 8mm Fine Round Aquamarine

$4,090 (Taxes Included)

(18)

Order now and your order ships by Wed, Nov 11.

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ENDS SOON!

USD$250 Gift Card With Purchase Over USD$1,000.
Applies to a Future Purchase of USD$250 or More.
Use Code GIFT in Cart.

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Schedule a personalized, in-person visit to discover the perfect ethical origin fine jewelry piece for your milestone moments.

Why you'll love it

Low Profile

A setting that makes for a comfortable, snag-free wear.

Extra Secure

Gallery wire adds additional support to the center stone.

Exceptional Durability

The band’s thick depth provides strength.

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Why you'll love it

Gemstone ring on wooden jewelry box.

Order Details

Reviews

4.5
(18)

What customers are saying

Customers love how this setting sits low on the hand while letting the center stone take full focus, with many describing it as both timeless and unique. Wearers consistently receive compliments on the sparkle and the elegant simplicity of the design. Many say it is comfortable enough to wear every day and exactly what they were hoping for.

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Luke Reviewed Trillion Cut Three Stone Diamond Ring
8/5/2026

Yellow diamond ring

Ring arrived on time and looks great ...Read More

Kearsten's Fiancé Reviewed Trillion Cut Three Stone Diamond Ring
10/30/2023

She loved it!

My girlfriend (now fiancé) absolutely loved it! Small diamond but very shiny and reflective; no visible imperfections. Price was reasonable as well. ...Read More

Paul's WIFE Reviewed Trillion Cut Three Stone Diamond Ring
4/12/2023

Absolutely stunning in person! ✨

I went for this ring style because I like the idea of the ring sitting lower on my hand just as a personal preference. It's the best! I love everything about it and it's so unique! The quality is absolutely amazing as well and it's so sparkly. I got a 8x6 emerald cut moissanite for the center gemstone and the band is platinum (Size 6 finger for reference). ...Read More

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The Brilliant Earth Difference

Our team designs our collections with precision and skill at our San Francisco studio. We know it’s the details that matter most — so we obsess over each one.
Our dedication to quality craftsmanship begins with our responsibly sourced precious metals.
From collections that empower artisanal female miners to fair-trade gems, our world class experts have been carefully sourcing exceptional gemstones for twenty years.
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award-winning
artistry

award-winning
artistry

Our team designs our collections with precision and skill at our San Francisco studio. We know it’s the details that matter most — so we obsess over each one.

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Unmatched
materials & craftsmanship

Unmatched
materials & craftsmanship

Our dedication to quality craftsmanship begins with our responsibly sourced precious metals.

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industry-leading
standards

industry-leading
standards

From collections that empower artisanal female miners to fair-trade gems, our world class experts have been carefully sourcing exceptional gemstones for twenty years.

Have a question?

We're happy to help

Last updated on September 28, 2026