Strong's #6357: pitdah (pronounced pit-daw')

of foreign derivation; a gem, probably the topaz:--topaz.

Brown-Driver-Briggs Hebrew Lexicon:

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piṭdâh

1) topaz or chrysolite

1a) a precious stone

Part of Speech: noun feminine

Relation: of foreign derivation

Usage:

This word is used 4 times:

 

Exodus 28:17: "of stones: the first row shall be a sardius, a topaz, and a carbuncle: this shall be the first row."
Exodus 39:10: "of stones: the first row was a sardius, a topaz, and a carbuncle: this was the first row."
Job 28:19: " The topaz of Ethiopia shall not equal it, neither shall it be valued with pure gold."
Ezekiel 28:13: "stone was thy covering, the sardius, topaz, and the diamond, the beryl, the onyx, and the jasper,"