פטדה , Exodus 28:17; Exodus 39:10; Job 28:19; Ezekiel 28:13; τοπαζιον , Revelation 21:20; a precious stone of a pale dead green, with a mixture of yellow; and sometimes of fine yellow, like gold. It is very hard, and takes a fine polish. We have the authority of the Septuagint and Josephus for ascertaining this stone. The oriental topazes are most esteemed. Those of Ethiopia were celebrated for their wonderful lustre, Job 28:19 .