Strong's #1304: bareqeth (pronounced baw-reh'-keth)

or barkath {baw-rek-ath'}; from 1300; a gem (as flashing), perhaps the emerald:--carbuncle.

Brown-Driver-Briggs Hebrew Lexicon:

ּ / ּ

bâreqath

1) a gem, precious stone, emerald (Josephus)

Part of Speech: noun feminine

Relation: from H1300

Usage:

This word is used 3 times:

 

Exodus 28:17: "the first row shall be a sardius, a topaz, and a carbuncle: this shall be the first row."
Exodus 39:10: "the first row was a sardius, a topaz, and a carbuncle: this was the first"
Ezekiel 28:13: "and the jasper, the sapphire, the emerald, and the carbuncle, and gold: the workmanship of thy tabrets and of thy pipes"