1 2 The unit of weight for a diamond or other gemstone and also for a pearl, equivalent to 200 mg Standard to define the fineness of gold and gold alloy, expressed as a number out of 24 parts, e g 14 carat means 14/24ths gold in the alloy 24 carat gold is pure gold Most jewellery uses gold of 14 of 18 carats For convenience, the fineness of gold may be expressed in thousandths rather than carats: - 24 carats = 1,000 thousandths (1 000), - 18 carats = 750 thousandths (0 750), - 14 carats = 583 thousandths (0 583), - 12 carats = 500 thousandths (0 500)
A twenty-fourth part; a term used in estimating the proportionate fineness of gold
A unit of measure used to determine the weight of gem stones; one carat equals 200 milligrams
A carat is a unit for measuring the weight of diamonds and other precious stones. It is equal to 0.2 grams. The gemstone is 28.6 millimetres high and weighs 139.43 carats. a huge eight-carat diamond
Originally a unit of mass (weight) based on the Carob seed or bean used by ancient merchants in the Middle East The carat is still used for the weight of gem stones where 1 carat = 200mg For gold is is used to measure the purity where pure gold is 24 carats
the unit of measurement for the proportion of gold in an alloy; 18-karat gold is 75% gold; 24-karat gold is pure gold
{i} unit for measuring the weight of precious stones (equal to 200 milligrams); unit for measuring the quality of gold (also karat)
A value out of 24 used to describe the purity of precious metal For example, 24 carat gold is pure gold, 22 carat is 91 67% pure and 18 carat is 75% gold and 25% of some other metal such as silver or copper
Approximately 205 milligrams, or about the weight of the seed of the carob-tree which, being remarkably consistent, was used for measuring the weight of precious stones from earliest times Pure Gold is described as 24 carat; 18 carat gold will be 75% gold and 25 carat gold is a hardening alloy