For those who have been allergic to K gold, platinum is the first choice for sensitive muscles. Because the purity of platinum is extremely high, usually as high as 900‰-950‰, it contains no impurities. Therefore, it will not irritate the skin, and the overall wearing feeling is very comfortable and delicate, and people with sensitive muscles can choose with confidence. K gold is different. Take white gold for example, it looks similar to platinum. It is a mixture of gold and other metals. Essentially, it is an alloy with a purity of only 75%, and the risk of sensitization is still relatively high. So usually choose platinum.