Gold and glass cannot equal it, nor can it be exchanged for jewels of fine gold.
Job, having spoken of the wealth of the world, which men put such a value upon and take so much pains for, here comes to speak of another more valuable jewel, and that is, wisdom and understanding, the knowing and enjoying of God and ourselves. Those that found out all those ways and means to enrich themselves thought themselves very wise; but Job will not own theirs to be wisdom.
Commenting on Job 28:12-19
The gold and the crystal cannot equal it,.... Crystal was found in an island of the Red sea, situated before Arabia, called Neron, and in another, which from a gem found in it bears the name of Topazion, and may be thought therefore to be well known by Job; and though it is not now of so much account, it formerly was very valuable.
crystal--Or else glass, if then known, very costly. From a root, "to be transparent." jewels--rather, "vessels."