Kyanite, whose English name is Kyanite, is derived from the Greek Kyanos, που σημαίνει “μπλε”. It also has another English name, Kisthene, which also comes from Greek, που σημαίνει “double” και “δύναμη”. It refers to different hardness. It shows one of the biggest characteristics of kyanite, ήτοι, the product is in different directions on […]
