Strong's #3958: leshem (pronounced leh'-shem)

from an unused root of uncertain meaning; a gem, perhaps the jacinth:--ligure.

Brown-Driver-Briggs Hebrew Lexicon:

ׁ

leshem

1) a precious stone

1a) a precious stone in the high priest' s breast-plate

1a1) probably jacinth or ligure

Part of Speech: noun masculine

Relation: from an unused root of uncertain meaning

Usage:

This word is used 2 times:

 

Exodus 28:19: "And the third row a ligure, an agate, and an amethyst."
Exodus 39:12: "And the third row, a ligure, an agate, and an amethyst."