(Rev. 4:3, R.V., "sardius;" Heb. 'odhem; LXX., Gr. sardion, from
a root meaning "red"), a gem of a blood-red colour. It was
called "sardius" because obtained from Sardis in Lydia. It is
enumerated among the precious stones in the high priest's
breastplate (Ex. 28:17; 39:10). It is our red carnelian. Bibliography Information Easton, Matthew George. M.A., D.D., "Biblical Meaning for 'Sardine stone' Eastons Bible Dictionary". bible-history.com - Eastons; 1897.