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Limited Time Offer - 20% Off Everything
  1. Engagement Rings/
  2. Solitaires/
  3. Round

Round Classic Four Prong Solitaire

  • 2.0 Carat Diamonds Round Classic Four Prong Solitaire Diamond Engagement Ring in Platinum (Main View)
    Shown with 2ct in 18k White Gold
  • White Gold Round Classic Four Prong Solitaire featuring Lab Diamonds (Profile View)
    Shown with 2ct in 18k White Gold
  • High Quality Lab Grown Diamonds set in White Gold Round Classic Four Prong Solitaire (Side View)
    Shown with 2ct in 18k White Gold
  • platinum 2.5ct round classic lab diamond solitaire engagement ring ada diamonds design ad 144 macro
    Shown with 2.5ct in Platinum
  • 2.0 ct Diamonds Round Classic Four Prong Solitaire in Platinum (Profile View)
    Shown with 2ct in Platinum
  • High Quality 3.5 Carat Lab Diamonds Round Classic Four Prong Solitaire in Platinum & Yellow Gold (Main View)
    Shown with 3.5ct in Platinum & 14k Yellow Gold
  • Platinum & Yellow Gold Round Classic Four Prong Solitaire Diamond Engagement Ring featuring 3.5 Carat Man Made Diamonds (Profile View)
    Shown with 3.5ct in Platinum & 14k Yellow Gold
  • 3.5 Carat Diamonds set in Platinum & Yellow Gold Round Classic Four Prong Solitaire (Side View)
    Shown with 3.5ct in Platinum & 14k Yellow Gold
  • 2.25 Carat Lab Diamonds set in Yellow Gold Round Classic Four Prong Solitaire Diamond Engagement Ring (Side View)
    Shown with 2.25ct in 18k Yellow Gold
  • Rose Gold Round Classic Four Prong Solitaire featuring 2.5 Carat Diamonds (Main View)
    Shown with 2.5ct in 18k Rose Gold
  • 2.75 ct Lab Created Diamonds set in 14k Yellow Gold Round Classic Four Prong Solitaire (Main View)
    Shown with 2.75ct in 14k Yellow Gold
  • yellow gold 4 carat round lab created diamond classic four prong solitaire engagement ring ada diamonds design ad 144 with wedding band
    Shown with 4.25ct in 14k Yellow Gold
  • 18k yellow gold 1 ct round classic lab diamond solitaire engagement ring on model design ad 144
    Shown with 1ct in 18k Yellow Gold
  • White Gold 1.25 Carat Round Brilliant Solitaire Engagement Ring Feat. Lab Grown Diamonds Ada Diamonds Design Number AD-144 on Model Shot
    Shown with 1.25ct in Platinum
  • Platinum & 18k Yellow Gold Round Classic Four Prong Solitaire Diamond Engagement Ring featuring 1.5 Carat Lab Diamonds
    Shown with 1.5ct in Platinum & 18k Yellow Gold
  • Yellow Gold 1.75 Carat Round Brilliant Solitaire Engagement Ring With Lab Diamonds Ada Diamonds Design Number AD-144 on Model
    Shown with 1.75ct in Yellow Gold
  • platinum 2 carat round classic four prong lab diamond solitaire engagement ring on model ada diamonds design ad 144
    Shown with 2ct in Platinum
  • Yellow Gold Round Classic Four Prong Solitaire Diamond Engagement Ring featuring 2.25 Carat Diamonds
    Shown with 2.25ct in 18k Yellow Gold
  • Three Carat Round Classic Four Prong Solitaire Engagement Ring in Platinum with Lab Grown Diamonds Ada Diamonds Design Number 144 On Model
    Shown with 2.5ct in 18k Platinum
  • High Quality 2.5 Carat Diamonds Round Classic Four Prong Solitaire Diamond Engagement Ring in Rose Gold
    Shown with 2.5ct in 18k Rose Gold
  • 2.75ct Classic Round four prong solitare made in platinum engagement ring made with lab made diamonds ADA Diamonds design ad 144
    Shown with 2.75ct in Platinum
  • 3ct round lab diamond
    Shown with 3ct in Rose Gold
  • Platinum Round Classic Four Prong Solitaire Diamond Engagement Ring featuring Hand Selected 3.25 Carat Diamonds
    Shown with 3.25ct in Platinum
  • 3.5 Carat Round Platinum Lab Diamond Solitaire Engagement Ring with Wedding Band on Model Ada Diamonds Design Number AD-144
    Shown with 3.5ct in Platinum
  • Platinum & Yellow Gold Round Classic Four Prong Solitaire Diamond Engagement Ring featuring 3.5 ct Man Made Diamonds (Main View)
    Shown with 3.5ct in Platinum & 14k Yellow Gold
  • Lab Created Diamonds set in Platinum Round Classic Four Prong Solitaire (Main View)
    Shown with 3.75ct in Platinum
  • Four Carat Round Four Prong Solitaire Lab Grown Diamond Engagement Ring On Hand Ada Diamonds Design 144
    Shown with 4ct in Platinum
  • 14k yellow gold 4.25ct round lab grown diamond in classic four prong solitaire engagement ring ada diamonds design ad 144 on model
    Shown with 4.25ct in 14k Yellow Gold
  • 5 Carat Round Classic Four Prong Engagement Ring On Model Ada Diamonds Design AD-144
    Shown with 5ct in Platinum
  • 3.25 ct Lab Grown Diamonds set in Platinum & Yellow Gold Round Classic Four Prong Solitaire Diamond Engagement Ring (Main View)
    Shown with 3.25ct in Platinum & 18k Yellow Gold
  • profile view of platinum two carat round brilliant classic solitaire engagement ring with man made diamonds ada diamonds design ad 144 on model
    Shown with 2ct in Platinum
  • 3.0ct Round Diamond Engagement Ring in Rose Gold Four Prong Setting - AD-144
    Shown with 3.5ct in 14k Rose Gold
  • Yellow Gold Classic Four Prong Solitaire Lab Diamond Engagement Ring On Model AD-144
    Shown with 1ct in 18k Yellow Gold
  • Shown with 2.25ct in 14k Yellow Gold
  • Shown with 2.75ct in Platinum
  • Shown with 2.75ct in Platinum
  • Shown with 3.25ct in 14k Rose Gold
    Setting From $1,250 $1,000
    Ships in 2-3 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.

    2.5 Carat Synthetic Diamonds set in White Gold Round Classic Four Prong Solitaire (Main View)

    Holiday Sale 2024

    Terms & Conditions:

    • Discount applies to select styles only.
    • This offer does not apply to custom-designed jewelry or settings.
    • A full diamond purchase is required to qualify for the discount; deposits (20%) are excluded.
    • Settings are eligible for a discount only with the purchase of a diamond.
    • Offer is valid for new purchases only and does not apply to previous transactions.
    • This promotion is available for a limited time and may be withdrawn at any time without notice.
    • This offer cannot be combined with any other promotions, discounts, or special offers.
    Affectionately known as "ring pop" by our Diamond Concierge team, this timeless and traditional solitaire setting features four prongs for maximum security. Customize your lab diamond solitaire engagement ring with band widths of 1.8-2.5mm. 

    Ready to Begin Your Concierge Experience?

    © 2024 Ada Diamonds, 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.