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.
The Karat. The karat designation of a gold item tells how much gold is present in the alloy used to make the item. Pure gold is 24-karat (24K), so a number smaller than 24 indicates how many 24ths of the alloy are gold. For example, 12K gold contains a minimum of 12/24 gold, or 50 percent.old designated 10K contains 37.5 percent pure gold and 62.5 percent other metals. Metal of less than 10K gold content cannot be sold as gold in the U.S. A typical 10K gold alloy contains 37.5 percent gold, 52 percent silver, 4.9 percent copper, 4.2 percent zinc and 1.4 percent nickel.