Kyanite. A mineral occurring in thin-bladed crystals and crystalline aggregates, of a sky-blue color. It is a silicate of aluminum. It is little used for jewelry.

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“Two things are necessary to the life of pure faith. The first is, that we behold God alone, under all the imperfect coverings that conceal him; the second is, constantly to have our souls kept in a state of dependence.”
–Fenelon