Kyanite, whose English name is Kyanite, is derived from the Greek Kyanos, which means “màu xanh da trời”. It also has another English name, Kisthene, which also comes from Greek, which means “double” Và “sức mạnh”. It refers to different hardness. It shows one of the biggest characteristics of kyanite, đó là, the product is in different directions on […]
