A Promise, Perfected

Round Engagement Rings with Side Stones

These round engagement rings with side stones flank a round center with lab-grown diamond accents: matched rounds, pears, marquises, baguettes or trillions. Three stone designs lead the collection, alongside pave, channel set, halo and vintage styles. Each setting comes in white, yellow or rose gold, platinum, or Silvadium, a tarnish-resistant sterling silver, and you choose the center in the next step.

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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2946 rings
2946 rings
Conflict-Free
Ethically sourced diamonds
Lifetime Warranty
Free cleaning & resizing
Free Shipping
30-day returns
IGI / GIA Certified
Independently graded

Buying guide

Side stone shapes

The side stones set the mood of a round diamond engagement ring with side stones. Round side stones match the center for a classic three stone look. Pear and marquise side stones add length and point toward the center. Baguettes and trapezoids give a crisp, step-cut line, and trillions add a sharp triangular edge. A few designs use bar or bezel settings for the sides, which sit lower and protect the edges.

Three stone, channel and pave

  • Three stone: one center with a matched stone on each side, the most common choice here.
  • Channel set: accents sit between two metal walls along the band, with no prongs to catch.
  • Pave and halo: rows of small accents on the band or around the center for more sparkle.
  • Vintage and floral: milgrain edges, filigree or petal-like clusters.

Metal, width and price

Gold comes in 10K, 14K or 18K. Platinum suits detailed settings that need strong prongs, and silver keeps the cost lowest. Band widths mostly run about 1.8 to 2.5 mm. Many designs can also be ordered for a fancy yellow, green, blue or pink center. Settings start under $250, and most are between about $880 and $1,400. That price covers 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.

Round Engagement Rings with Side Stones FAQs

What are some good side stones for a round diamond?

Round side stones are the safest match for a round diamond, since they share its shape and brilliance. Pear and marquise side stones add length and point toward the center, while baguettes or trapezoids give a clean step-cut contrast. In this collection, matched round sides in a three stone layout are the most common, and the side stones are lab-grown diamond accents set to frame the center you choose.