King James Bible Dictionary

Associated with diamonds (Exodus 28:18) and emeralds (Ezekiel 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 (Exodus 24:10; comp. Ezekiel 1:26).

A precious stone
Job 28:6; Job 28:16; Isaiah 54:11; Ezekiel 28:13

Set in the breastplate
Exodus 28:18

The color of the firmament
Ezekiel 1:26

Seen in the foundation of the New Jerusalem in John's apocalyptic vision
Revelation 21:19

(Heb. sappir), a precious stone, apparently of a bright-blue color, set: (Exodus 24:10) the second stone in the second row of the high priest's breastplate, (Exodus 28:18) extremely precious, (Job 28:16) it was one of the precious stones that ornamented the king of Tyre. (Ezekiel 28:13) The sapphire of the ancients was not our gem of that name, viz. the azure or indigo-blue, crystalline variety of corundum, but our lapis lazuli (ultra-marine).

SAP'PHIRE, noun [Latin sapphirus; Gr. to scrape, to shine, to be fair, open, beautiful.]

A species of silicious gems or minerals, of several varieties. In hardness it is inferior to the diamond only. Its colors are blue, red, violet, yellow, green, white, or limpid, and one variety is chatoyant, and another asteriated or radiated.

Sapphire is a subspecies of rhomboidal corundum.

The oriental ruby and topaz are sapphires.

Sapphire is employed in jewelry and the arts.