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Each tanzanite marquise ring here centers a natural, treated tanzanite cut in the long, pointed marquise shape. Choose a plain solitaire or a design with lab-grown diamond accents, such as pave, halo, three stone or vintage. Every design comes in white, yellow or rose gold, platinum, or Silvadium, a tarnish-resistant sterling silver, from 1 to 9 carats total weight.
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
Tanzanite is a violet-blue gem found in one small area of Tanzania. Its color shifts between blue and purple as you turn the stone. It is a December birthstone. Tanzanite rates about 6 to 6.5 on the Mohs hardness scale, softer than sapphire or diamond, so it is best kept away from hard knocks and stored apart from harder stones.
The marquise cut is long and narrow with two points. It shows the gem's color along its length and looks larger than many shapes of the same weight. The points are the most exposed part of the stone, so designs that guard them with prongs, a halo or a bezel are a good choice for tanzanite worn daily.
White gold, platinum and silver bring out the blue; yellow and rose gold bring out the violet. Gold comes in 10K, 14K or 18K. Prices start under $300, and most rings are between about $750 and $1,050.
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.