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Shown With 6mm Round Sapphire

Sapphire Tiara Diamond Ring (1/10 ct. tw.) Set with 6mm Blue Round Sapphire

This romantic setting features a harmonious balance of round and marquise shapes complemented with milgrain detailing (1/10 total carat weight). ... Read More

Metal: 18K White Gold


Size Guide

Delivery by Christmas

Order now for delivery by Thu, Dec 16

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:
6.0 x 6.0 mm
Average ColorAverage Color:
Average ClarityAverage Clarity:
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Sri Lanka

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 17, 2021
Sydnee's fiancée
Incredibly Perfect!

Very helpful and accommodating, even for deployed military members! The quality is unmatched and my fiancé loves her diamond ring. A wide variety of jewelry and the website makes it very easy to customize and look at features of each diamond. Truly incredible ! ...Read More

June 18, 2021
Joe k
Beautiful and sustainable

I got this for my wife, for our 10 year wedding anniversary, it was the best money every spent. She was so happy and it looks so beautiful on her finger. We are both environmentalists and we know how bad diamond mining is so we wanted to get a beautiful lab created diamond. Better then I could ever expect, you would never know the difference unless you knew. Handcrafted with care, we will get all of our jewelry here now. ...Read More

May 8, 2021
The Homi
Yep, this was it

Pros: lab diamond option Looks nice Cons: The box felt ok ...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