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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“Prayer and thanks are like the double motion of the lungs, the air that is sucked in by prayer is breathed forth again by thanks.”
–Thomas Goodwin, The Return of Prayers