Definitions from Black's Law Dictionary: 2nd Edition and Ballentine's Law Dictionary as are available for each term in each dictionary.
  • Ballentine's Law Dictionary

    A weight of 4 grains.

  • Black's Law Dictionary: 2nd Edition

    A measure of weight for diamonds and other precious stones, equivalent to three and one-sixth grains Troy, though divided by jewelers into four parts called "diamond grains." Also a standard of fineness of gold, twenty-four carats being conventionally taken as expressing absolute purity, and the proportion of gold to alloy in a mixture being represented as so many carats.