Bible Dictionaries
Sardius

Watson's Biblical & Theological Dictionary

אדם , so called from its redness, Exodus 28:17; Exodus 39:10; Ezekiel 28:13; σαρδιος , Revelation 21:20; a precious stone of a blood-red colour. It took its Greek name from Sardis, where the best of them were found.

Bibliography Information
Watson, Richard. Entry for 'Sardius'. Richard Watson's Biblical & Theological Dictionary. https://www.studylight.org/​dictionaries/​eng/​wtd/​s/sardius.html. 1831-2.