Kyanite, whose English name is Kyanite, is derived from the Greek Kyanos, وهو ما يعني “أزرق”. It also has another English name, Kisthene, which also comes from Greek, وهو ما يعني “double” و “قوة”. It refers to different hardness. It shows one of the biggest characteristics of kyanite, إنه, the product is in different directions on […]
