Turquoise. A hydrous phosphate or alumina containing a little copper. It has a blue, or bluish-green color, and usually occurs in kidney-shaped masses with a nodular surface, like that of a bunch of grapes. The fine specimens are worth nearly half as much as diamonds.

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“Surely he took up our infirmities and carried our sorrows, yet we considered him stricken by God, smitten by him, and afflicted.”
– Isaiah 53:4