sapphire
Associated with diamonds (Exodus 28:18) and emeralds (Ezek. 28:13); one of the stones in the high priest's breastplate
It is a precious stone of a sky-blue color, probably the lapis lazuli, brought from Babylon.
The throne of God is described as of the color of a sapphire (Exodus 24:10; compare Ezek. 1:26).
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