The name Kyanite comes from the Greek "dis" ("two") and "sthenos" ("strength"), meaning "twofold strength, twofold hardness". The mineral was named after the French mineralogist René-Just Haüy in 1801, who used the name to refer to the electrical properties and the different scratch hardness in different ...
Fantastically luminous Kyanite from Nepal!
The name Kyanite comes from the Greek "dis" ("two") and "sthenos" ("strength"), meaning "twofold strength, twofold hardness". The mineral was named after the French mineralogist René-Just Haüy in 1801, who used the name to refer to the electrical properties and the different scratch hardness in different directions. Kyanite, as the blue mineral is still called and was already named by Abraham Gottlob Werner in 1789, has its origin in the Greek "kyanos" ("blue") and describes the predominant color of the mineral. Spellings of the second name can also be found in the literature as cyanite, zianite, kianite or cyanite.
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