Dior Rose des Vents and Rose Céleste necklace in yellow gold, diamonds, mother of pearl and onyx

The 4 criteria of evaluation of the diamond are defined by the "4 Cs":

- Cut (its size, i.e. the shape that the cutter has given it by creating facets)

- Clarity (its purity)

- Color (its color, ranging from D exceptional white + to Z tinted)

- Carat (its weight)

Gold 750 ‰, formerly called "18k Gold", is the finest quality of gold that can be found in jewelry. Note: since January 1, 1995, it is mandatory in France to use the concept of thousandths to indicate the purity of gold.

18k yellow gold (750 thousandths) is 75% pure gold, alloyed with other precious metals to make it workable. It is the most beautiful quality of gold that can be found in jewelry.

Also known as 18k gold.

The "round cut", also called "brilliant cut" is the cut (i.e. the way the stone is cut) considered to be of ideal proportions to maximize brilliance and fire.