Passage cross-references.

And they saw the God of Israel: and there was under his feet as it were a paved work of a sapphire stone, and as it were the body of heaven in his clearness.

It cannot be valued with the gold of Ophir, with the precious onyx, or the sapphire.

His hands are as gold rings set with the beryl: his belly is as bright ivory overlaid with sapphires.

O thou afflicted, tossed with tempest, and not comforted, behold, I will lay thy stones with fair colours, and lay thy foundations with sapphires.

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