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Shown With 9mm Cushion Aquamarine

Aquamarine Cadenza Halo Diamond Ring Set with 9mm Fine Cushion Aquamarine

Glittering diamonds and light-catching milgrain form an ornate halo around the center gem in this breathtaking vintage-inspired ring. Pairs of pavé diamonds nestled in marquise-shaped frames gracefully flow down the band for additional sparkle (1/5 total carat weight). ... Read More

Metal: 18K White Gold


Size Guide

Order now for delivery by Mon, Jan 31

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Georgetown, Washington DC showroom entryway

Georgetown, Washington DC

3332 Cady's Alley NW
Washington, DC 20007


Daily: 10am–7pm

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Ring Information

18K White Gold
Prong metal:
18K White Gold
Average width:
2.5 mm
Rhodium finish:

Accent Gemstones

Min. carat total weight Min. carat total weight:
Average ColorAverage Color:
Average ClarityAverage Clarity:

Center Gemstone

Average DimensionsAverage Dimensions:
9.0 x 9.0 mm
Average ColorAverage Color:
Average ClarityAverage Clarity:
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Luxury with a Conscience®

A ring that evokes the happiness of love and partnership is even more joyful when you know that it was sustainably sourced and mindfully produced. From our mission to our unique jewelry designs, everything at Brilliant Earth is held to exceptional standards.

Our engagement ring settings are made-to-order with each one handcrafted for your selected center gem’s unique characteristics to ensure the high quality of the finished piece.
As part of our commitment to protecting the planet, Brilliant Earth is Carbonfree®. We calculated our carbon footprint by assessing the direct emissions of our energy use, including packaging, shipping, and employee travel and commuting. Then we partnered with to offset our carbon emissions by contributing to Tropical Rainforest Conservation in Brazil. We will continue identifying ways to reduce our footprint and offsetting emissions that we cannot eliminate.
We present each Brilliant Earth design in a jewelry box crafted of wood from Forest Stewardship Council (FSC) certified forests—trees that are managed and harvested in a manner that protects and maintains natural communities and respects the rights of workers and indigenous people.
December 23, 2021
She's gorgeous!

This ring really hit the nail on the head for me! It has a classic, vintage vibe, but doesn't feel gaudy or dated. We chose a London Blue Topaz for the stone and it is absolutely beautiful. Couldn't have went with a better ring. ❤️ ...Read More

December 10, 2021
Beautifully Unique

Went with partner to pick out an engagement ring. Exceptionally helpful staff with plenty of options to find the right piece for a fair price. ...Read More

August 3, 2021
A Magical Dream Come True!!

I saw this ring a loooong time ago and loved it so much, I pretty much flat-out told my boyfriend to get this one for me for when he finally proposed lol! And he did!!! It was an absolutely magical proposal made all the more beautiful with this engagement ring!! He got the yellow gold setting with a .31 carat lab-made oval diamond (size 6), and it fits absolutely perfect and is sparklier and prettier than I could have ever imagined ✨I would totally recommend this ring and I'm so grateful to Brilliant Earth for helping my dreams come true 💖 ...Read More

Order Details

*Estimated delivery time if ordered by 2 PM PT tomorrow

Free FedEx Shipping

Free 30 Day Returns

Easy monthly payments with Affirm. From 0% APR financing. Up to 36 months. Subject to credit approval.

Special 12 month financing options available with Wells Fargo, subject to credit approval.

Layaway options also available.

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Gemstone engagement ring in box