A Promise, Perfected

Gemstone Three Stone Rings

A gemstone 3 stone ring sets a colored gemstone center between two lab-grown diamond side stones. Pick lab-grown sapphire, ruby or emerald, or natural tanzanite, aquamarine, amethyst and more, in round, oval, cushion, emerald, princess, pear, marquise or heart shapes. These three stone gemstone engagement rings come in white, yellow or rose gold, platinum or Silvadium, a tarnish-resistant sterling silver.

1Choose a setting
Choose a Setting
Browse signature ring designs
2Select a diamond
Select a Diamond
Filter by shape, carat & budget
3Complete the ring
Complete the Ring
Preview & make it yours
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6653 rings
6653 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

Choosing the side stones

The side stones set the ring's shape. Round sides keep the look classic, pear sides curve in toward the center and give a wider outline, and tapered baguettes or trillions add straight, geometric lines. Most designs sit on a plain or thin band. A few add pave shoulders, a pave split shank, a braided band, milgrain or a halo around the center.

Choosing the center gemstone

  • Lab-grown ruby, emerald, and blue, pink or yellow sapphire.
  • Natural, treated: tanzanite, aquamarine, amethyst, citrine, garnet, peridot and blue topaz.

For a ring worn every day, lab-grown sapphire and ruby are the hardest of these gems at 9 on the Mohs scale. Aquamarine, topaz and lab-grown emerald are around 7.5 to 8. Tanzanite, peridot, amethyst, citrine and garnet are softer and wear best with some care. White lab-grown diamond sides make any colored center look brighter.

Total weight, metal and price

Every design offers 1 to 9 carats total weight, chosen on the product page. Gold comes in 10K, 14K or 18K, and every design is also made in platinum and silver. Prices start under $300, and most rings are between about $800 and $1,300 at the smallest option.

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.