Definition

1. Noun:
   • Carat (unit of purity): A unit for measuring the purity of gold, where 24 carats represents pure gold. The purity is expressed as a fraction of 24 parts.
   • Carat (unit of mass): A unit of mass used for weighing gemstones and pearls, equivalent to 200 milligrams.

Usage Examples

• Noun (purity):

  • Vàng 18 ca ra. (18 carat gold.)
  • Nhẫn này là vàng 24 ca ra. (This ring is 24 carat gold.)

• Noun (mass):

  • Viên kim cương nặng một ca ra. (The diamond weighs one carat.)
  • Viên ngọc trai này 2 ca ra. (This pearl is 2 carats.)

Advanced Usage

• The term is used almost exclusively in the context of jewelry, specifically for stating the fineness of gold or the weight of precious stones. It is a direct loanword and transliteration of "carat."

Variants and Related Words

• Ca-ra (n): An alternative, hyphenated spelling for "ca ra."
• Kara (n): A less common, alternative transliteration of the same word.

Synonyms

• Karat: The American English spelling variant, specifically used for gold purity (e.g., 24-karat gold).
• Carat: The standard international spelling for both mass and purity units.

Notes on Usage

• In Vietnamese, "ca ra" is invariable and does not take a plural form. The number precedes the term (e.g., ).
• For gold, the number indicates purity: means 14 parts out of 24 are pure gold.
• For gems, the number indicates weight.

1. Carat
   • Vàng 24 ca ra
     24 carat gold, pure gold