Bible Dictionary · S
Sapphire
Associated with diamonds (Ex 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 colour, probably the lapis lazuli, brought from Babylon. The throne of God is described as of the colour of a sapphire (Ex 24:10; comp. Ezek 1:26).
From Easton’s Bible Dictionary (1897), by Matthew George Easton.