Easton's Bible Dictionary (1897)
Heb. harash (Ex. 35:35; 38:23) means properly an artificer in wood, stone, or metal. The chief business of the engraver was cutting names or devices on rings and seals and signets (Ex. 28:11, 21, 36; Gen. 38:18).
Smith's Bible Dictionary (1863)
His chief business was cutting names or devices on rings and seals; the only notices of engraving are in connection with the high priest’s dress—the two onyx stones, the twelve jewels and the mitre-plate having inscriptions on them.