Château de Breteuil/Wikipedia A reconstruction of the 2,800-carat jewel at the heart of the Affair of the Diamond Necklace. By 1784, a grifter named Jeanne de la Motte had entered the picture.
Just as a dollar is divided into 100 pennies, a carat is divided into 100 points. For example, a 50-point diamond weighs 0.50 carats. But two diamonds of equal weight can have very different values ...