(Numbers 17:12). (See JACHIN) 1. Jacinth (ὑάκινθος , the hyacinth), properly a flower of a deep purple or reddish blue (so ὑακίνθινος, hyacinthine, i.e. hyacinth-colored, "of jacinth," Revelation 9:17); hence a precious stone of like color (Revelation 21:20). Considerable doubt prevails as to the real mineral thus designated, if indeed any particular stone be intended, and not rather every purplish or azure gem. According to Dr. Moore (Anc. Mineralogy, p. 169), it is most nearly related to. the zircon of modern mineralogists. The hyacinth or jacinth stone was of various colors, from white or pale green to purple-red. Pliny speaks of it as shining with a golden color, and in much favor as an amulet or charm against the plague (Hist. Nat. 37:9). It occurs in the Sept. for תִּחִשׁ, Exodus 25:5; also for תְּכֵלֶי, Exodus 26:4; but is usually supposed to represent the Heb. לֶשֶׁם, "ligure" (q.v.) (Rosenmü ller, Bibl. Alterthumsk. IV, 1, p. 38). (See GEM).