Each 3 carat oval solitaire ring in this collection comes with a 3 carat lab-grown diamond center already set, and the price covers the finished ring. Choose a thin or rounded plain band, a pavé band, a cathedral setting over graduated pavé, or a hidden halo. Every 3 ct oval solitaire engagement ring comes in white, yellow or rose gold in 10K, 14K or 18K, or platinum.



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 with the sparkle of a round and a longer outline. Spread over that length, a 3 carat oval looks larger from above than a round of the same weight, and it makes the finger look slimmer. Some ovals show a darker bow-tie shape across the middle; a well-cut stone keeps it faint. As a solitaire the oval needs nothing else around it.
A thin plain band makes the center look larger by contrast, and a rounded plain band feels smooth and easy to wear every day. A pavé band lines the shoulders with lab-grown diamond accents for extra sparkle. The cathedral setting lifts the oval on arches that rise from a graduated pavé band. A hidden halo tucks a row of small lab-grown diamonds under the center, so the ring looks like a plain solitaire from above and sparkles from the side. The 3 carat figure is the center alone; accents add to the total.
Platinum and white gold keep the setting bright around a colorless center. Yellow and rose gold add warmth. 10K gold is the toughest and costs least, while 18K shows the richest color. Platinum is naturally white and the heaviest choice.
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.