Glossary of watchmaking


Couleur | カラー | 颜色

A gem is most often chosen for its colour.

The diamond has its own internationally recognized colour grading scale, defined by professional bodies.

See fancy colour. Fancy colours (in order of rarity)

  • Red

  • Blue

  • Pink

  • Yellow

  • Brown

  • Green

Each colour results from the stone's specific chemical or structural properties. The market value of the stone depends on the intensity of its colour, the dominant shade and in certain instances the secondary shade.