ENJOY Free shipping and free returns See Details

Carat Weight And Size

How are sapphires measured?

Gems vary in density, so a sapphire and a diamond of the same carat weight are visually different sizes. Because sapphires tend to be heavier, a one carat sapphire is generally slightly smaller in size than a one carat diamond. For ease of selection and setting, size is a more useful measurement, which we list in millimeters (mm). Our standard size for a round sapphire is 6 mm, which is approximately one carat.

Brilliant Earth carries a variety of shapes and sizes beyond our standard so if you are looking for something more unique, please contact us.

 

 
JOIN THEMOVEMENT

Share our story with others

know moreabout the issues
  • Gold Mine in British Columbia Spills Toxic Sludge

    Gold Mine in British Columbia Spills Toxic Sludge

    It’s being called one of the biggest environmental disasters in Canada in decades. A dam built to hold toxic waste burst last month at the Mount... Read More

  • Interview with Holly Dranginis of the Enough Project

    Interview with Holly Dranginis of the Enough Project

    Recently I had the privilege to speak with Holly Dranginis , a Policy Associate for the Enough Project , in her Washington, D.C. office. Holly is a... Read More