A lab-grown ruby cluster ring in yellow gold gathers small stones close around a red center so the top reads fuller. Choose a lab-grown ruby in an oval, round, cushion, pear, marquise, heart, princess or emerald shape, framed by a floral halo or a graduated cluster of lab-grown diamonds, set in 10K, 14K or 18K yellow gold.



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 cluster ring groups several stones tightly so they read as one larger shape. Here the cluster takes a few forms: a floral double halo that wraps the lab-grown ruby in two rows of lab-grown diamonds, a star-shaped floral halo above a pave band, and a graduated cluster of lab-grown diamonds that step down in size beside the lab-grown ruby, with an open basket underneath. A halo makes the center look wider, while the graduated look leaves more of the lab-grown ruby's outline in view.
Every design offers 1 to 9 carats total weight, so you can keep the ring delicate or let the red take over the hand. Round and oval lab-grown rubies suit a flower-like cluster best. Pear, marquise and emerald shapes stretch the look along the finger, and a heart reads as a romantic choice. A lab-grown ruby is the same mineral as a natural ruby, corundum, and rates 9 on the Mohs scale, so it handles daily wear well.
Every ring comes in 10K, 14K or 18K yellow gold. 10K is the hardest and palest of the three, 18K has the deepest yellow and is a little softer, and 14K sits between them. Yellow gold warms the red of the lab-grown ruby and makes the white sparkle of the accents stand out. Prices start at about $975 for the smallest option, and most rings sit near $1,000.
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.