These blue diamond halo rings are engagement ring settings made for a fancy blue center, framed by a halo of lab-grown diamond accents. Every design comes in round, oval, cushion, princess, emerald, radiant, Asscher, pear, marquise and heart shapes, in white, yellow or rose gold, platinum, or Silvadium, a tarnish-resistant sterling silver. You choose the blue center in the next step.



From timeless solitaires to dazzling halos and vintage-inspired designs, explore the most-loved engagement ring settings — and find the style that tells your story.
A single diamond, beautifully unadorned — the timeless, most-loved setting that puts your stone center stage.
Shop Solitaire Rings →A circle of pavé diamonds frames the center stone, adding sparkle and making it look noticeably larger.
Shop Halo Rings →Three diamonds symbolising your past, present and future — a meaningful design with extra brilliance.
Shop Three-Stone Rings →Tiny diamonds set along the band catch the light from every angle for all-over shimmer.
Shop Pavé Rings →Intricate milgrain and antique-inspired detailing, for a ring with timeless, heirloom character.
Shop Vintage Rings →Two interwoven bands of metal and diamonds create a modern, dynamic silhouette.
Shop Twisted Shank Rings →Buying guide
A halo is a ring of small stones set around the center. The white sparkle of the lab-grown diamond accents outlines the blue and makes the center look larger. Most designs carry pave down the band as well, so the sparkle continues from the halo onto the shoulders.
White gold and platinum keep the halo bright and the blue cool. Yellow and rose gold add warmth around the center. Gold comes in 10K, 14K or 18K. Settings start under $200, and most are between about $750 and $1,100. That price is for the setting only; the center is priced when you choose it.
Each ring is made for you in 10–15 days. Shipping is free on orders over $500, returns are accepted within 30 days, and one resize is free within 60 days of delivery.