What is a carat?
A metric carat is a unit of mass used to measure gemstones and pearls. One carat is equivalent to 200 milligrams or 0.2 grams. This unit is commonly used in the jewelry industry to determine the weight of precious stones such as diamonds, sapphires, and rubies. The carat weight of a gemstone is a crucial factor in determining its value and is often used in conjunction with other factors such as cut, color, and clarity to assess its overall quality.
What is a kilogram?
A kilogram is metric unit of weight subdivided into 1,000 grams. The base unit of mass in the International System of Units (SI) is a kilogram and not, as is quite often mistaken, the gram.
One liter of water weighs 1kg.