Each 3 carat emerald cut lab-grown diamond engagement ring here comes with its center already set, and the price covers the finished ring. Choose a solitaire on a plain or pavé band, a cathedral setting, a halo, a hidden halo, a three stone ring or side accents in pear or marquise. Metals are white, yellow and rose gold in 10K, 14K or 18K, and 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 emerald cut is a rectangle with cropped corners and long, parallel step facets. Instead of scattered sparkle it shows broad flashes of light and deep, glassy planes. The elongated outline spreads the weight across the finger, so a 3 carat emerald cut ring reads long and elegant. Because the large table is open, inclusions are easier to see than in a brilliant cut.
The 3 carat weight is the center alone. Pavé, halos and side stones are lab-grown diamonds that add to the ring's total.
Platinum and white gold suit the cool, clean lines of a step cut. Yellow gold gives a classic, slightly vintage look, and rose gold a softer one. 10K gold is the most durable and costs least; 18K shows the deepest color. Platinum is naturally white and dense, and it holds prongs securely over many years.
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.
A 3 carat emerald cut lab-grown diamond ring here starts at about $1,950, and most cost between about $2,250 and $2,400. That price includes the center, already set, in the lowest-priced metal. Platinum, 18K gold and styles with a halo, pavé or side stones cost more. A natural diamond of the same size costs far more, so lab-grown centers make this size much easier to afford.