Zircon. A material occurring in tetragonal crystals, usually of a brown or gray color. It consists of silicon, iron and zirconium, and is harder than the garnet. The transparent varieties are used as gems. The red variety is called Hyacinth; a colorless, pale yellow, or smoky-brown variety from Ceylon is called jargon.

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“A saint cannot do evil before men but he gives opportunity for sinners to speak evil of God. If there be any spots on a Christian's coat, the world will soon spy them.”
–George Swinnock in Works