If you want to sell diamonds or gold jewellery in Melbourne, you might have wondered what’s the difference between the terms carat and karat. These terms are often used interchangeably but they are two different measurements of two different features; one is a unit of weight whilst the other is a unit of pureness.
Keep on reading to know the difference between carat and karat!
Carat is a unit of mass used to measure the weight of diamonds and other gemstones. One carat is equal to 200 milligrams or a fifth of a gram. A flawless diamond that is at least 100 carats is called a paragon. The term ‘carat’ comes from the bean of the Mediterranean carob tree, which grows in the form of a long pod containing small seeds.
Prior to 1907, countries had different measurements of what one carat is equal to. In 1907, the measure of a carat (equal to 200 mg) was standardised at the Fourth General Conference on Weights and Measures. One thing to note is that even if two diamonds are of the same weight, they can be valued differently based on the 4Cs: cut, clarity, colour, and carat.
Karat, on the other hand, is a measurement of gold’s purity or fineness. The purity of gold can be scaled from 1 to 24, with 24 karats considered as pure gold. Pure gold is too soft to work with and therefore it is mixed with other metals, such as nickel, zinc, or copper, to make it stronger.
One karat represents 1/24 of the whole so a 22 karat gold coin is 22 parts gold and 2 parts base metals (also called impurities). In the United States, karat is written as ‘K’ whilst in other countries, it is written as ‘C’.
Summing it up
Carat is the measurement of the weight of diamonds and precious stones and karat is the measurement of the purity of a metal. Carat is 200 milligrams or one-fifth of a gram while karat is measured on a scale of 1-24.
Looking to sell diamonds or gold jewellery in Melbourne? Check out Crown Diamonds. Crown Diamonds has 15 years of experience of Expert Appraisal. We pride ourselves in providing the best appraisal rate when you sell your gold and diamonds to us. For enquiries, call us at 03 9645 6465!