20. None of the Hebrew texts give any hint as to the nature of this stone. However, since the Septuagint repeatedly translates the Hebrew word by chrysolithos, except where it merely transliterates it, and in Ezech., x, 9, since, moreover, the Vulgate follows this translation with very few exceptions, and Aquila, Josephus, and St. Epiphanius agree in their rendering, it can be assumed that the chrysolite of the ancients equates to our topaz. The word tharsis very likely points to the origin of the gem (Tarshish). The modern chrysolite is a green oblong hexagonal prism of unequal sides terminated by two triangular pyramids. Topaz, or ancient chrysolite, is an octangular prism of an orange-yellow colour; it is composed of alumina, silica, hydrofluoric acid, and iron. it is found in Ceylon, Arabia, and Egypt. Several species were reported to exist (Pliny, "Hist. nat.", XXXVII, xlv) and during the Middle Ages it was believed to possess the power of relieving anxiety at night, driving away devils and to be an excellent cure for eye diseases. Chrysoprase Chrysoprase, Greek chrysoprasos, the tenth foundation stone of the celestial Jerusalem (Apoc., xxi, 20). This is perhaps the agate of Ex., xxviii, 20, and xxxix, 13, since the chrysoprasus was not very well known among the ancients. It is a type of green agate, composed mostly of silica and a small percentage of nickel. Coral Coral, Heb. ramwt (Job, xxviii, 18; Prov., xxiv, 7; Ezech., xxvii, 16); Sept. meteora, ramoth; Vulg. excelsa, sericum. The Hebrew word seems to derive from tas, "to be high", probably pertaining to a tree. Another possibility is that the name originates from a strange country, as did the coral itself. It is apparent that the ancient versions have been prone to mis-interpretation. In one instance they even went so far as to simply transliterate the Hebrew word. In Ezech., xxvii, 16, coral is mentioned as one of the articles brought by the Syrians to Tyre. The Phoenicians mounted beads of coral on collars and garments. These corals were obtained by Babylonian pearl-flshers in the Red Sea and the Indian Ocean. The Hebrews apparently made very little use of this substance, and it is seldom mentioned in their writings. This also explains the difficulty experienced in scriptural translation. Gesenius (Thesaurus, p. 1113) translates phnynys (Job, xxviii, 18; Prov., iii, 15; viii, 11; xx, 15; xxxi, 10; Lam., iv, 7) as "red coral".