Kethleen is a precious natural mineral, which mainly occurs in the ancient forest of Kunlun Mountain in northwest China. This mineral is chosen as the first choice for noble jewelry in China because of its fine particles, bright oil, natural dullness and regular pore distribution.

In addition, ice pearl jade is also used to refer to a kind of upper-middle grade or middle-grade jadeite, which is similar in texture to Laokeng jadeite and usually colorless or less colored.