How is carat weight defined and what is its unit?

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Multiple Choice

How is carat weight defined and what is its unit?

Carat weight is a mass unit used for gemstones. It is defined as 1 carat = 200 milligrams (0.2 grams). A fraction of a carat scales accordingly, and a point is 0.01 carat (equal to 2 milligrams). This measure is specific to gemstones and is not a unit of length, volume, or density, which is why the description of carat as a mass unit is the correct interpretation. The other ideas—being a unit of length, volume, or density—do not apply to how carat is used in gemology.

Carat weight is a mass unit used for gemstones. It is defined as 1 carat = 200 milligrams (0.2 grams). A fraction of a carat scales accordingly, and a point is 0.01 carat (equal to 2 milligrams). This measure is specific to gemstones and is not a unit of length, volume, or density, which is why the description of carat as a mass unit is the correct interpretation. The other ideas—being a unit of length, volume, or density—do not apply to how carat is used in gemology.

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