Fluorite. Calcium fluoride, a mineral of many different colors, white, yellow, purple, red, etc., often very beautiful. When crystallized it is commonly in cubes with perfect octahedral cleavage. Some varieties are used for ornamental vessels. Also called fluorspar, or simply fluor. The colored varieties are often called false ruby, false emerald, false topaz, false sapphire, and false amethyst. For jewelry purposes the chief value of the stone is the expense of cutting and mounting.

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“If we would hold the true course in love, our first step must be to turn our eyes not to man, the sight of whom might oftener produce hatred than love, but to God, who requires that the love which we bear to him be diffused among all mankind, so that our fundamental principle must ever be, Let a man be what he may, he is still to be loved because God is loved.”
–Calvin, Institutes