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.
Yellow, green and red golds are produced by alloying gold with copper and silver in different proportions. The gold content of jewellery is expressed as a number of carats-pure gold is said to be 24 carat gold; 18 carat gold contains 18/24 or 75% pure gold.ellow, green and red golds are produced by alloying gold with copper and silver in different proportions. The gold content of jewellery is expressed as a number of carats-pure gold is said to be 24 carat gold; 18 carat gold contains 18/24 or 75% pure gold.