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Shown With 9x6.5mm Emerald Aquamarine

Aquamarine Sienna Diamond Ring (3/8 ct. tw.) Set with 9x7mm Fine Emerald Aquamarine

This glamorous ring secures the center gem with elegant claw prongs and features French pavé diamonds, a setting style that allows light to reach the diamonds from multiple angles and enhances their sparkle. ... Read More

Metal: 18K White Gold


Size Guide

Order now for delivery by Thu, Sep 30

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:
2.3 mm
Rhodium finish:

Accent Gemstones

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

Center Gemstone

Average DimensionsAverage Dimensions:
9.0 x 7.0 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.
November 15, 2020
Happy Customer
My fiancé LOVED it!

I looked at many different settings in person before I finally went with the Sienna engagement ring, and I couldn't be happier with that choice. My fiancé can't stop looking at it, and has been receiving compliments on it constantly since she's had it. It even sparkles at night! ...Read More

November 15, 2020
My wife loves the ring, she's happy

I gave it as a engagement gift to my girlfriend and she loves the ring ...Read More

September 22, 2019
Kenneth Pinedo
Beautiful ring! Great Customer Service!

First thing I look for in buying something is customer service. Brilliant Earth superseded that. They answered every inquiry I had and walked me through every step.When I bought the ring, it got delivered within 2 weeks which I was more than glad. When I first saw it it was beautiful and still is!! My fiancé loves the ring and the most important part is that she loves that I bought it from a conflict free company. I went to hundreds of jewelry stores. Places like Jared and Kays, and none compared to the price that Brilliant Earth gave to me. For the same ring, I was getting quoted 1k-3k more than Brilliant Earth. I totally recommend to anyone to buy from here. ...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