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  1. Engagement Rings/
  2. Three Stones/
  3. Radiant

Radiant and Trapezoid Setting

  • Synthetic Diamonds Radiant and Trapezoid Setting in White Gold (Main View)
    Shown with 2ct in 18k White Gold
  • Lab Grown Diamonds set in White Gold Radiant and Trapezoid Diamond Engagement Ring (Profile View)
    Shown with 2ct in 18k White Gold
  • High Quality Lab Grown Diamonds set in White Gold Radiant and Trapezoid Setting (Side View)
    Shown with 2ct in 18k White Gold
  • 18k white gold 4.5 carat three stone engagement ring with radiant and trapezoid lab grown diamonds ada diamonds design ad 278
    Shown with 4.5ct in 18k Platinum
  • platinum 3.5ct radiant cut lab grown diamond engagement ring with trapezoid side stones ada diamonds design ad 278 side view
    Shown with 4.5ct in Platinum
  • 18k white gold radiant cut 3ct lab diamond engagement ring wiht trapezoid side stones ada diamonds design ad 278 profile
    Shown with 3ct in 18k Platinum
  • platinum 4 ct radiant cut and trapezoid three stone engagement ring with lab diamonds ada diamonds design ad 278 macro
    Shown with 3ct in Platinum
  • 14k yellow gold 4 carat radiant cut and trapezoid three stone engagement ring with lab diamonds ada diamonds design ad 278 macro
    Shown with 3.5ct in 14k Yellow Gold
  • 14k yellow gold 4 ct radiant cut lab diamond ring with trapezoid side stones ada diamonds design ad 278 profile
    Shown with 3.5ct in 14k Yellow Gold
  • Exceptional Quality 4.0 Carat Lab Diamonds Radiant and Trapezoid Setting in Yellow Gold (Main View)
    Shown with 4ct in 14k Yellow Gold
  • 3.5 ctw Lab Created Diamonds Radiant and Trapezoid Diamond Engagement Ring in Yellow Gold (Profile View)
    Shown with 3.5ct in 14k Yellow Gold
  • 1.5ct radiant cut lab diamond in three stone
    Shown with 2.5ct in Platinum
  • 2.5 Carat Lab Diamonds set in Platinum Radiant and Trapezoid Setting (Main View)
    Shown with 2ct in Platinum
  • platinum lab diamond three stone ring with 2.25 ct radiant cut lab diamond and trapezoid side stones ada diamonds design ad 278 on model
    Shown with 2.25ct in Platinum
  • Yellow Gold Radiant and Trapezoid Diamond Engagement Ring featuring 2.5 ct Diamonds (Main View)
    Shown with 2.5ct in 14k Yellow Gold
  • platinum 2.75ct radiant cut and trapezoid three stone lab diamond engagement ring ada diamonds design ad278 on model
    Shown with 2.75ct in Platinum
  • platinum 3 carat radiant cut and trapezoid three stone lab diamond engagement ring ada diamonds design ad 278 on model
    Shown with 3ct in Platinum
  • Yellow Gold Radiant and Trapezoid Diamond Engagement Ring featuring High Quality 3.5 ctw Lab Diamonds (Main View)
    Shown with 3.5ct in 14k Yellow Gold
  • platinum 4.5 carat radiant cut lab diamond ring with trapezoid side stones ada diamonds design ad 278
    Shown with 3.75ct in Platinum
  • 4 carat radiant and trapezoid three stone lab created diamond engagement ring ada diamonds design ad 278
    Shown with 4ct in 14k Yellow Gold
  • 1.5 Carat Diamonds Radiant and Trapezoid Diamond Engagement Ring in Platinum & Yellow Gold (Main View)
    Shown with 2.5ct in 14k Platinum
  • Shown with 3ct in Platinum
  • Shown with 3ct in Platinum
  • Shown with 4ct in 14k Yellow Gold
    Setting From $2,450
    Ships in 3-4 Weeks

    Our friendly Diamond Concierge Team is available to answer any questions you may have, help you choose a spectacular lab diamond, and customize this engagement ring to your exact specifications.

    Radiant and Trapezoid Setting - Ada Diamonds

    A modern three stone engagement ring setting, featuring a pair of brilliant cut trapezoid lab grown diamond side stones in a basket or trellis style.

    Wedding Band Sitting Flush Against Engagement Ring - Design Number: AD-278

    The Perfect Match

    This setting pairs with a variety of wedding band styles.

    Shop All Wedding Bands

    Ready to Begin Your Concierge Experience?

    © 2025 Alexander Primak Jewelry Inc. All diamonds offered by Ada Diamonds™ are proudly laboratory-grown and can be referred to as lab created diamonds, grown diamonds, synthetic diamonds, man-made diamonds, cultivated diamonds, or cultured diamonds.