The Everlasting Temptation of Kyanite Jewelry Kyanite Jewelry is a formation of the triclinic mineral structure belonging to the aluminum-silicate mineral group. Kyanite originates from the Greek expression 'kyanos,' which describes a deep blue. The different terms used to describe Kyanite are Disthene, Rhaeticite, and Cyanite. This stunning gem appears from transparent to translucent.