GEOLOGY
CRYSTALLOGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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thousands.
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karats.
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freshness.
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carats.
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Detailed explanation-1: -’Caratage’ is the measurement of purity of gold alloyed with other metals. 24 carat is pure gold with no other metals. Lower caratages contain less gold; 18 carat gold contains 75 per cent gold and 25 per cent other metals, often copper or silver. The minimum caratage for an item to be called gold varies by country.
Detailed explanation-2: -karat, also spelled Carat, a measure of the fineness (i.e., purity) of gold. It is spelled carat outside the United States but should not be confused with the unit used to measure the weight of gems, also called carat.
Detailed explanation-3: -24-carat gold is 99.99% pure, or 24/24 carats. 22-carat gold, expressed in a percentage, is 91.7% pure.
Detailed explanation-4: -Carat is the unit by which the purity of gold can be determined. The purest form of gold is 24-carat gold because it is not alloyed with any other metal.