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Demi with 1.5ct Oval Certified Natural Diamond in 18K Yellow Gold

$10,590

(92)

Metal: 18K Yellow Gold

Order now for delivery by Mon, Oct 26

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Free 1-Year Resizing

This hidden halo engagement ring pairs a 1.5-carat oval cut diamond center stone with a halo of diamonds that wraps around its base.

  • 1.4mm band width — creates a slim, comfortable profile for everyday wear.
  • Hidden halo setting — wraps a halo of diamonds around the base of the center stone for added brilliance without a raised silhouette, shaped to keep the setting compact and the center stone as the focal point.
  • Complete preset design — includes the center stone already mounted in the finished setting.
  • 45 round diamond accents — (0.29 ct. tw.) in a scalloped pavé setting complete the halo.
  • G-H color, VS2-SI1 clarity — grading keeps the center stone bright and clear.
  • Precious metal options — let you choose the one that suits your style.

This center diamond is certified for authenticity by an independent grading lab and inscribed with a number that matches its certificate.

Ring Information

  • Style: BE1D305PSOV15CTNAT-18KY
  • Metal: 18K Yellow Gold
  • Prong metal: 18K Yellow Gold
  • Width: 1.4 mm

Accent Gemstones

Center Gemstone

  • 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.
  • Learn More

Schedule a personalized, in-person visit to discover the perfect ethical origin fine jewelry piece for your milestone moments.

Gemstone ring on wooden jewelry box.

Order Details

Reviews

4.5
(92)

What customers are saying

Most customers love the vivid sparkle and how the diamond takes center stage with the petite band and hidden halo detail, with many saying they receive constant compliments wherever they wear it. The ring fits comfortably enough to wear every day, and wearers describe the quality as exceeding what they expected. Many say it is the most beautiful ring they could have imagined, and some come back for the matching wedding band.

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Keith Reviewed Demi Three-Quarter Coverage Diamond Ring (1/3 ct. tw.)
7/1/2026

So beautiful, packaging was very nice as well! ...Read More

Michael Reviewed Demi Three-Quarter Coverage Diamond Ring (1/3 ct. tw.)
6/18/2026

I love it and my future wife also loves it! ...Read More

Azra Reviewed Demi Three-Quarter Coverage Diamond Ring (1/3 ct. tw.)
4/7/2026

Honestly, I couldn't be happier with this whole experience. I went with the 18K white gold demi three-quarter diamond ring, and it turned out even better than I expected. The quality is super clean, the diamonds shine like crazy, and it just looks perfect in person. What stood out the most to me was how easy everything was. The team was really helpful, quick to respond, and actually took the time to walk me through everything without making it feel rushed or confusing. That meant a lot, especially for such an important purchase. When the ring came in, I was honestly blown away. The detail, the finish, everything about it just felt right. You can tell it's made with care. Overall, I'm really glad I went with them. Big purchase, big moment, and they delivered exactly how I hoped they would. Definitely recommend ! ...Read More

The Brilliant Earth Difference

Our team designs our collections with precision and skill at our San Francisco studio. We know it’s the details that matter most — so we obsess over each one.
Our dedication to quality craftsmanship begins with our responsibly sourced precious metals.
From our Beyond Conflict Free Diamonds® to the most innovative lab diamonds on the planet, our world class gemologists have been sourcing exceptional diamonds with traceable origins for twenty years.
image description

award-winning
artistry

award-winning
artistry

Our team designs our collections with precision and skill at our San Francisco studio. We know it’s the details that matter most — so we obsess over each one.

image description

Unmatched
materials & craftsmanship

Unmatched
materials & craftsmanship

Our dedication to quality craftsmanship begins with our responsibly sourced precious metals.

image description

industry-leading
standards

industry-leading
standards

From our Beyond Conflict Free Diamonds® to the most innovative lab diamonds on the planet, our world class gemologists have been sourcing exceptional diamonds with traceable origins for twenty years.

Have a question?

We're happy to help

Yes. This Demi ring includes one complementary resizing within 60 days of purchase, or up to one year when the new size falls within our recommended sizing range. Resizing includes free shipping both ways.
This ring is offered in 18K yellow gold and 18K white gold as shown on the product page. Precious metal options can be selected at checkout to match personal style.
This ring’s hidden halo of pavé diamonds wraps around the center stone to add subtle extra sparkle and visual presence without adding bulk. The scalloped pavé detail creates a refined frame that complements the oval center gem.
Yes. The scalloped pavé-set accent diamonds are securely set to hold the stones and support everyday wear. The setting and prong construction are designed to protect both the center diamond and the accent diamonds.
A slim pavé wedding band in the same metal creates a continuous, sparkling look that complements the hidden halo. For a seamless pairing, a contoured or low-profile plain band in matching precious metal will nestle alongside this ring and maintain a balanced silhouette.

Last updated on September 25, 2026