A Promise, Perfected

Radiant Cut Side Stone Rings

These radiant cut engagement rings with side stones set lab-grown diamond accents beside the cut-corner rectangular center. Choose round side stones, baguettes, marquise or pear shapes, a three stone layout, a cluster or a channel set band, in white, yellow or rose gold, platinum or silver. You pick the center stone in the next step, and the setting is built around it.

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
Find Your Cut

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2918 rings
2918 rings
Conflict-Free
Ethically sourced diamonds
Lifetime Warranty
Free cleaning & resizing
Free Shipping
30-day returns
IGI / GIA Certified
Independently graded

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Buying guide

Matching side stones to a radiant center

A radiant cut is a rectangle or square with trimmed corners and brilliant faceting. Baguettes and trapezoids echo its straight sides for a clean, structured look. Round side stones add sparkle and soften the outline. Marquise and pear side stones point toward the center and give the ring more movement, and a few designs use trillions. Many designs follow a three stone layout, one stone on each side of the center.

Channel set, pave or cluster

Channel set side stones sit in a groove between two metal walls, with no prongs on top, which keeps the band smooth. Pave bands line the shank with many small stones, and cluster designs group small stones at the shoulders or around the side stones. Some designs add a halo, milgrain, a bezel or a split shank. Most designs can also be made for a fancy blue, yellow, pink or green center, and many for black.

Choosing a metal

Every design comes in white, yellow or rose gold in 10K, 14K or 18K and in platinum, and nearly all in Silvadium, a tarnish-resistant sterling silver. White gold and platinum suit colorless and blue centers, yellow gold warms the look, and rose gold softens it. Platinum is dense and wears slowly; silver is the lowest-priced choice. Settings start under $250, and most are between about $850 and $1,350. The price is for the setting; the center is priced when you choose it.

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.