The red suit in a card deck, with diamond-shaped glasses.
In preferential and some other games, the suit of diamonds is considered the third in order of suit in the deck: spades, clubs, diamonds, hearts.
In the bridge, the order of suits is different: clubs, diamonds, hearts, spades.
In France in the XV century, this suit was denoted by the image of the moon sickle, and later symbolized one of the most important items of knightly use – the flag or coat of arms. On ancient German maps of the XVI century, the suit of diamonds was indicated by the image of lions. On later German maps appeared the image of bells – bells.
In Russia of the XVIII century, this suit was called “bells”, “boots”. Very rarely in Russian in the XVIII century the name of this suit was used, directly borrowed from French – “caro” (square, quadrilateral).