But the Mohs scale is deceptive. The steps between the minerals are not evenly spaced. For example, diamond is only one number away, but it’s many times harder than gems in the corundum family. Only a ...

Diamond color is all about what you can’t see. Diamonds are valued by how closely they approach colorlessness – the less color, the higher their value. (The exception to this is fancy color diamonds, ...

Color grading represents a fundamental element of the diamond. Less color means more value and rarity. Even though many diamonds appear colorless to the inexperienced eye, most stones have a color ...