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3.5 Carat Oval Platinum Laboratory-Grown Diamond Halo Ring with Three-Row Pave Band
Price$7,149$14,298Ends Soon
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These 3.5 carat oval rings come finished, with a 3.5 carat oval lab-grown diamond center set and priced in. Pick white, yellow or rose gold in 10K, 14K or 18K, or platinum, then a style: a plain or pave solitaire, a halo, a cathedral ring, a three stone engagement ring or marquise and pear side accents.
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 →Keep exploring
Buying guide
An oval is an elongated brilliant cut, so it sparkles like a round while facing up larger than a round of the same weight. At 3.5 carats that length gives a bold look that also slims the finger. Many ovals show a faint, darker bow tie across the middle; good cutting keeps it soft. Halos and pave add small lab-grown diamonds beyond the 3.5 carat center.
Every ring comes in white, yellow or rose gold (10K, 14K or 18K) or in platinum. White gold and platinum suit a colorless stone; yellow and rose gold add warmth. Platinum is dense and naturally white, and it wears to a soft patina rather than losing metal, which makes it a secure choice for a large center.
Rings start at about $3,150 with the 3.5 carat center included, and most are between about $3,450 and $3,650 in the starting metal option.
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.
Here, a 3.5 carat oval lab-grown diamond engagement ring starts at about $3,150, with the center set and included. Most rings are between about $3,450 and $3,650 in the starting metal option; higher karats and platinum cost more. Lab-grown diamonds cost far less than natural diamonds of the same size.