jasper (n.)

precious stone, c. 1300, from Anglo-French jaspre, Old French jaspre, with unetymological -r-, a variant of jaspe (12c.), from Latin iaspidem (nominative iaspis), from Greek iaspis "jasper," via an Oriental language (compare Hebrew yashpeh, Akkadian yashupu). The modern use of the word is more restricted than in ancient times. Hence, from French, jaspé (1851 in English) "mottled or variegated like jasper."

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."