Sardine, Sardius (red) (Heb. ôdem), the stone which occupied the first place in the first row of the high priest’s breast-plate. Ex. 28:17. The sard, which is probably the stone denoted by ôdem, is a superior variety of agate, sometimes called earnelian, and has long been a favorite stone for the engraver’s art. Sards differ in color: there is a bright-red variety, and perhaps the Hebrew ôdem, from a root which means “to be red,” points to this kind.