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Shown With 8mm Round Aquamarine

Aquamarine Demi Diamond Ring (1/3 ct. tw.) Set with 8mm Fine Round Aquamarine

This elegant engagement ring features a glittering hidden halo of diamonds that wraps around the center gem. A petite band complements the gallery for an elegant, chic look (1/3 total carat weight). ... Read More

Metal: 18K White Gold


Size Guide

Order now for delivery by Thu, Oct 28

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:
1.4 mm
Rhodium finish:

Accent Gemstones

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

Center Gemstone

Average DimensionsAverage Dimensions:
8.0 x 8.0 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.
September 29, 2021
Uma's fiance

My fiance loved the ring. It looked gorgeous on her hand. I chose the ring online but also went in-store to check it out in person. The hidden halo is a very modern style and does not take away from the center stone and the petite band makes the diamond pop more. For reference - Diamond: Oval 1.65 Carat. Metal: Platinum and Ring size is 6. ...Read More

September 8, 2021
Jerry's fiancé
Absolutely stunning ✨

I love everything about my ring ✨ ...Read More

June 7, 2021
Amazing engagement ring and fantastic service

I purchased the ring for an engagement and also purchased a matching wedding band. Overall, I was extremely happy with the entire process and the final product. Being able to shop for thousands of diamonds and the right setting was actually a pretty fun experience, and the website and staff made this seamless. I was a bit hesitant purchasing a ring online without ever having seen it in person - but with the reviews I read and the service that was provided, I felt a lot more comfortable. I will absolutely be purchasing from Brilliant Earth again. ...Read More

Order Details

*Estimated delivery time if ordered by 2 PM PT Monday

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