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- $720
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Four-Prong Comfort Fit 1.5mm Engagement Ring

Petite and delicate, this classic four-prong solitaire engagement ring has a rounded inside edge for increased comfort.

Please note that rings ordered in 18K white or 18K yellow gold will feature an 18K band and 14K head. ... Read More

Holiday Badge

Delivery by Valentine's Day

View with Diamond Shape: Round

View with Carat Size: 3/4 Carat

1/3 carat
2 carat

Metal: Platinum

Diamond Origin: Natural

$720 (Setting Only)

Calendar Badge

Order now for delivery by Wed, Jan 22, depending on center diamond and ring size.

Ring Information

Style:
BE1199-PT
Metal:
950 Platinum
Width:
1.5 mm
Setting:
Four-Prong

Center Diamond

This ring can be set with:

Round
Princess
Cushion
Oval
Emerald
Radiant
Asscher

Note: This setting is available only with purchase of a diamond.

Made Just for You

At our San Francisco design studio, our team designs every ring to delight you, from the first time you see it and every day after. We carefully consider the entire piece—obsessing over comfort, quality, and durability so you can cherish it for a lifetime.

Our commitment to transparency began with the Beyond Conflict Free™ standard we pioneered. We select diamonds for their ethical and environmentally responsible origins, besting the industry standard of merely “conflict free” — which is narrowly defined as diamonds that finance wars against legitimate governments. Our diamonds provide miners with fair wages and safe working conditions, empower their communities, and never fund wars.
From mines to Main Street, we care about building better communities by compassionately giving back. In 2021, we started the Brilliant Earth Foundation to focus and amplify our impact. Since then, we’ve donated $2 million towards leaving communities better than we found them – from the areas where precious materials are mined to the communities where our team and customers live.

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November 21, 2024
Shanay
2 Californians Engaged in Central Park

Thanks to Brilliant Earth, we now have an amazing story to tell- 2 Californians engaged in Central Park. Thanks for the stunning ring! #sweepstakes ...Read More

November 5, 2024
Rujaine's fiance
Stunning Ring and Stellar Service!

I couldn't be happier with my purchase of the 18K White Gold Four-Prong Comfort Fit 1.5mm Ring from Brilliant Earth! The ring is absolutely stunning in its simplicity and elegance. The 18K white gold has a beautiful, bright finish that catches the light perfectly. The quality is exceptional, with a sturdy four-prong setting that feels secure but doesn't overpower the delicate style of the ring. I appreciate Brilliant Earth's commitment to ethical sourcing, too as it adds an extra layer of satisfaction to my purchase. Overall, it's a beautiful, timeless piece that my fiancé will cherish for years. Highly recommend! ...Read More

April 5, 2024
DiamondStarer!
Most Beautiful Diamond in the World!

I got the best 1/2 ct diamond I could find instead of a poor 1 ct diamond, and your site helped me do just that. No pressure tactics or buying leftover stock. I got to pick my diamond, and the fact that you show it close up without hiding the flaws is awesome. People are jealous of its brilliance! ...Read More

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