K gold, white gold, rose gold
K gold, white gold, rose gold
"AU" is a symbol used internationally to indicate the purity of gold (ie, gold content). K gold (or gold) is an alloy of gold and other metals. K gold jewelry is characterized by low gold content, low cost, and can be made into various colors, and is not easily deformed and worn. K gold is divided into 24K gold, 22K gold, 18K gold, 9K gold, etc. according to the amount of gold. The most common "18K gold" in China's market, its gold content is 18 × 4.1666 = 75%, the mark on the jewelry should be "18K" or "750".
Introduction
K Jin's "K" is the preparation of the term "Karat". The complete notation is this: Karatgold (K gold), K gold is measured by: pure gold is 24K (ie 100% gold), 1K The gold content is about 4.166%. The method of calculating the gold content with "K" is based on a carob tree on the Mediterranean coast. The carob tree has a light red flower, and the pods are about 15 cm long. The beans are brown and can be made into glue. No matter where the tree grows, the size of the beans is exactly the same, so in ancient times, people used it as a standard for measuring weight. Over time, it becomes a unit of weight for measuring precious, subtle items. At that time, the measurement of diamonds and gold also used this unit, which is [Karat". It was not until 1914 that "Karat" was stipulated as a standard internationally.
Everyone understands the meaning and calculation method of K gold, so it is not difficult to know how many kinds of K gold, according to international standards, K gold is divided