Rosa's heart was racing from the four cups of coffee she had just finished, but she thought she might be having a heart attack.
A carat is a unit of weight for diamonds and other gemstones. One carat equals 200 milligrams (0.200 grams). There are 453 grams in a pound (1,000 grams to a kilogram). Therefore, if your fiancee weighs 170 pounds, you have a 385,050-carat fiancee! A karat, when used with gold, is a unit of purity-- 24-karat gold is pure gold, but usually you mix gold with a metal like copper or silver to make jewelry (because pure gold is too soft). Each karat indicates 1/24th of the whole.
Jewelers measure gold by karats. Pure gold is 24 karats and contains 99 percent to 99.9 percent pure gold. Most gold jewelry is an alloy, or mix, of gold with one or more metals. The higher the karat number, the more gold a piece contains.Mixing gold with other metals makes the piece stronger but lessens its value.ure gold is 24 karats and contains 99 percent to 99.9 percent pure gold. Most gold jewelry is an alloy, or mix, of gold with one or more metals. The higher the karat number, the more gold a piece contains. Mixing gold with other metals makes the piece stronger but lessens its value.