Bible Dictionaries
Emerald

Easton's Bible Dictionary

Heb. nophek (Exodus 28:18; 39:11 ); i.e., the "glowing stone", probably the carbuncle, a precious stone in the breastplate of the high priest. It is mentioned (Revelation 21:19 ) as one of the foundations of the New Jerusalem. The name given to this stone in the New Testament Greek is smaragdos, which means "live coal."

Bibliography Information
Easton, Matthew George. Entry for 'Emerald'. Easton's Bible Dictionary. https://www.studylight.org/​dictionaries/​eng/​ebd/​e/emerald.html. 1897.