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3 Carat Cushion Cut Platinum Laboratory-Grown Diamond Solitaire Engagement Ring with Pave
Price$2,709$5,418Ends Soon
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These 3 carat cushion cut solitaire rings arrive with a 3 carat lab-grown diamond center already set, so the price covers the finished ring. Pick a thin plain band, a rounded plain band or a pavé band, a cathedral setting over graduated pavé, or a hidden halo. Every style 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
A cushion cut has a square or slightly rectangular outline with softly rounded corners, like a pillow. Its larger facets give broad, chunky flashes of light, and the rounded corners make it less prone to chipping than a shape with points. In a solitaire nothing competes with the center, so a 3 carat cushion carries the whole ring on its own.
A plain band keeps the look clean and puts all the attention on the center. The thin band makes the center look larger by contrast, while the rounded band feels smooth and comfortable. A pavé band adds a line of lab-grown diamond accents along the shoulders. The cathedral setting raises the center on arches over a graduated pavé band, and the hidden halo places a row of small lab-grown diamonds under the center, visible from the side. The 3 carat figure is the center alone; accents add to the total.
White gold and platinum keep the setting bright and cool. Yellow and rose gold give the cushion's soft outline a warmer frame. Within gold, 10K is the hardest, 14K is a popular middle ground and 18K has the richest color. Platinum is naturally white and noticeably heavier.
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.