Job 28:6

There is found a place, whose stones are clean Sapphires, and where the clots of the earth are gold.

Exodus 24:10

and saw the God of Israel, and under his feet as it were a brick work of sapphire, and as it were the fashion of heaven when it is clear,

Job 28:16

No wedges of gold of Ophir, no precious Onyx stones, no Sapphire may be compared unto her.

Song of Songs 5:14

His hands are like gold rings, having enclosed the precious stone of Tarshish; His body is as the pure ivory, decked over with Sapphires.

Isaiah 54:11

Behold thou poor, vexed, and despised: I will make thy walls of precious stones, and thy foundation of Sapphires;

Revelation 21:19

and the foundations of the wall of the city was garnished with all manner of precious stones. The first foundation was jasper, the second sapphire, the third a chalcedony, the fourth an emerald:

Treasury of Scripture Knowledge

Summary

The stones of it are the place of sapphires: and it hath dust of gold.

Bible References

Sapphires

Job 28:16
No wedges of gold of Ophir, no precious Onyx stones, no Sapphire may be compared unto her.
Exodus 24:10
and saw the God of Israel, and under his feet as it were a brick work of sapphire, and as it were the fashion of heaven when it is clear,
Song of Songs 5:14
His hands are like gold rings, having enclosed the precious stone of Tarshish; His body is as the pure ivory, decked over with Sapphires.
Isaiah 54:11
Behold thou poor, vexed, and despised: I will make thy walls of precious stones, and thy foundation of Sapphires;
Revelation 21:19
and the foundations of the wall of the city was garnished with all manner of precious stones. The first foundation was jasper, the second sapphire, the third a chalcedony, the fourth an emerald: