precious stone, c.1300, from Anglo-French jaspre, Old French jaspre, jaspe, from Latin iaspidem (nominative iaspis), from Greek iaspis "jasper," via an Oriental language (cf. Hebrew yashpeh, Akkadian yashupu).
masc. proper name, English form of Caspar or of Gaspar, the traditional name of one of the Three Kings. Said by Klein to be of Persian origin and meaning literally "treasure-holder." Used from 1896 for "a rustic simpleton."
(Heb. yashpheh, "glittering"), a gem of various colours, one of the twelve inserted in the high priest's breast-plate (Ex. 28:20). It is named in the building of the New Jerusalem (Rev. 21:18, 19). It was "most precious," "clear as crystal" (21:11). It was emblematic of the glory of God (4:3).