Topaz. A mineral occurring in rhombic prisms, generally yellowish and pellucid, also colorless, and of greenish, bluish, or brownish shades. It sometimes occurs massive and opaque. It is fluosilicate of aluminum, and is used as a gem. It is but little more valuable than the garnet, except occasionally unusual fine specimens.

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“Did Christ love you without any motive to draw His love, then will you not love Christ, in whom there are so many motives to draw your love?”
–Thomas Vincent, The True Christian's Love to the Unseen Christ