A Promise, Perfected

Lab-Grown Ruby Cluster Rings

A lab-grown ruby and lab-grown diamond cluster ring circles a red center with small stones, so the top reads as one larger shape. Choose a floral double halo, a star-shaped halo with a pavé band or a graduated cluster solitaire, with an oval, round, cushion, emerald cut, princess, pear, marquise or heart center in white, yellow or rose gold in 10K, 14K or 18K, platinum, or Silvadium, a tarnish-resistant sterling silver.

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120 rings
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Conflict-Free
Ethically sourced diamonds
Lifetime Warranty
Free cleaning & resizing
Free Shipping
30-day returns
IGI / GIA Certified
Independently graded

Buying guide

How a cluster ring is built

A cluster ring gathers small stones tightly around a center. The looks here:

  • Floral double halo: two rows of lab-grown diamonds form petals around the lab-grown ruby.
  • Star floral halo: a pointed petal outline with a pavé band along the finger.
  • Graduated cluster solitaire: lab-grown diamonds stepping down in size around the center, with an open basket that lets light in from the side.

The white lab-grown diamonds make the red look deeper, and the cluster makes the center look larger than it would on its own. That suits a lab-grown ruby cluster engagement ring or a bold right-hand ring.

What a lab-grown ruby is

A lab-grown ruby is the same red corundum crystal as a natural ruby, grown under controlled conditions. It rates 9 on the Mohs scale, just below diamond, so it holds up well in a ring worn every day. The color is even and the stone is usually very clean, at a far lower cost than a natural ruby of similar size and color.

Size, metal and price

Each design offers 1 to 9 carats total weight. Yellow and rose gold give a warm, classic look with red; white gold, platinum and silver make the contrast sharper. Prices start under $450, and most rings are just under $1,000 at their smallest size.

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.