These 3 carat white gold princess cut engagement rings come with a square 3 carat lab-grown diamond center already set, and the price includes the stone. Choose 10K, 14K or 18K white gold, then a style: plain or pavé solitaire, halo, hidden halo, cathedral, three stone, or a ring with pear or marquise 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
A princess cut is a square brilliant with sharp, pointed corners. It keeps a lot of its weight in its depth, so a 3 carat princess faces up a little smaller than a round of the same weight but has plenty of sparkle. Its four corners are the most exposed part of the stone, so they are held by prongs that cover each point.
White gold gives the crisp, modern look a princess cut is known for, and it keeps the color of a colorless lab-grown diamond looking clean. It is plated with rhodium for a bright white finish, which wears over time and can be renewed. 10K is the hardest, 14K is the usual choice, and 18K has the most gold.
A solitaire shows off the clean square outline. A halo squares off the look even more and makes the center appear larger. The hidden halo adds sparkle under the center without changing the top view. The three stone ring and the side-accent rings with pear or marquise stones widen the ring across the finger, and the cathedral lifts the center over a graduated pavé band.
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.