• Diamonds
    • THE LEO Diamond®
    • THE LEO First Light® Diamond
    • THE LEO Ideal Cut® Diamond
    • THE LEO® Legacy Lab-Created Diamond
    • Compare THE LEO® Collections >
  • Engagement & Wedding
  • Diamond Jewelry
  • Education
  • Responsibility
  • Find Your LEO Certification
Find in Store Find Your LEO Certification
Visibly Brighter
Find in StoreFind Your LEO Certification
  • Diamonds
        • THE LEO DIAMOND®
          The first diamond independently certified to be visibly brighter.
        • The LEO First Light® Diamond
          Microscopic nano-prisms release colorful bursts of brilliance and sparkle.
        • The LEO Ideal Cut® Diamond
          A rare, mathematically designed diamond with geometrically ideal proportions.
        • THE LEO® Legacy Lab-Created Diamond
          The first lab-created diamond worthy of THE LEO name.

        • Compare Diamond Collections

  • Engagement & Wedding
  • Diamond Jewelry
  • Education
  • Responsibility
  • Diamonds
        • THE LEO DIAMOND®
          The first diamond independently certified to be visibly brighter.
        • The LEO First Light® Diamond
          Microscopic nano-prisms release colorful bursts of brilliance and sparkle.
        • The LEO Ideal Cut® Diamond
          A rare, mathematically designed diamond with geometrically ideal proportions.
        • THE LEO® Legacy Lab-Created Diamond
          The first lab-created diamond worthy of THE LEO name.

        • Compare Diamond Collections

  • Engagement & Wedding
  • Diamond Jewelry
  • Education
  • Responsibility

Education

Explore By Topic

  • Certification & Brilliance
  • Diamond Care
  • Responsibility
  • Shopping & Budgeting
  • Certification & Brilliance
Measuring Brilliance

Learning about diamonds and what makes them beautiful begins with understanding the 4C’s – the characteristics of a diamond.

  • «
  • 1
  • 2
THE LEO Logo
  • Compare Diamonds
  • Engagement & Wedding
  • Diamond Jewelry
  • Education
  • Find in Store
  • Find Your LEO Certification
  • About THE LEO
  • Contact Us
Join Our Mailing List

Sterling Jewelers Inc. and its KAY and JARED brands are exclusive retail distributors in the U.S. for the Leo line of diamond jewelry.
“The Leo Diamond®” and “The Leo First Light® Diamond” are registered trademarks of Sterling Jewelers Inc. and used with permission.

© 2024 THE LEO, All Rights Reserved

  • Terms & Conditions
  • Privacy Policy