A Promise, Perfected

Lab-Grown Sapphire Cluster Rings

These lab-grown sapphire cluster rings surround a lab-grown sapphire in blue, pink or yellow with tightly set lab-grown diamonds: floral halos, a double halo and a graduated cluster. Every design comes in eight center shapes, including oval, cushion and pear. Choose white, yellow or rose gold in 10K, 14K or 18K, platinum, or Silvadium, a tarnish-resistant sterling silver.

1Choose a setting
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2Select a diamond
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3Complete the ring
Complete the Ring
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360 rings
360 rings
Conflict-Free
Ethically sourced diamonds
Lifetime Warranty
Free cleaning & resizing
Free Shipping
30-day returns
IGI / GIA Certified
Independently graded

Buying guide

Cluster styles

A cluster ring groups small stones closely around the center so the top reads as one larger shape. Lab-grown diamond and lab-grown sapphire cluster rings here take a few forms: petal halos that make the lab-grown sapphire look like a flower, a floral double halo with two rings of lab-grown diamonds, and a graduated cluster where the stones step down in size around the center.

A cluster covers more of the finger than a plain solitaire with the same center, so it looks generous without a large center. As a lab-grown sapphire cluster engagement ring, it suits someone who wants color and plenty of sparkle.

Lab-grown sapphire colors

Every design here can be ordered with a lab-grown blue, pink or yellow sapphire center. A lab-grown sapphire is corundum, with the same chemistry, hardness and crystal structure as a natural sapphire. At 9 on the Mohs scale it is one of the hardest gems, which makes it a sound choice for a ring worn every day, and it costs far less than a natural sapphire of the same size and color.

Carat, metal and price

Every design offers 1 to 9 carats total weight. White gold and platinum make a lab-grown blue sapphire look deeper, and yellow or rose gold suit pink and yellow. Rings start under $450 at the smallest size, and most start between about $970 and $990.

Made to order

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.