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.
“See a flame in a spark, a tree in a seed; see great things in little beginnings; look not so much to the beginning, as to the perfection, and so we shall be in some degree joyful, and thankful unto Christ.”
–Richard Sibbes, The Bruised Reed and Smoking Flax