These 1.5 carat princess cut solitaire rings come with a 1.5 carat lab-grown diamond center already set, and the price includes it. Choose platinum, or white, yellow or rose gold in 10K, 14K or 18K. Pick a plain or rounded band, a pavé band, a cathedral setting on a graduated pavé band, or a hidden halo that adds sparkle from the side.



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 princess cut is a square brilliant with pointed corners and a lot of sparkle. As a solitaire, its clean outline is the whole design. A 1.5 carat solitaire princess cut lab-grown diamond ring has a modern, geometric look that pairs easily with a straight wedding band. Because the corners are the most exposed points, a setting with secure prongs at each corner is worth looking for, and the ring is best taken off for heavy work.
The 1.5 carat figure is the princess center alone. Pavé and hidden halo details add more lab-grown diamond beyond the center.
Platinum is naturally white and dense, with a weighty feel. White gold gives a similar cool tone, while yellow and rose gold frame the square center with warmth. In gold, 10K wears hardest, 14K is the most common pick for 1.5 ct princess cut solitaire engagement rings, and 18K has the richest color.
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.