1. קֶרִח, ke'rach (properly ice, as it is rendered Job 6:16; Job 38:29; "frost," Ge 31:40; Job 37:10; Jer 36:30; Sept. κρύσταλλος), occurs in Eze 1:22, where the epithet "terrible" seems to be added by way of distinction from the ordinary signification of the word.
2. גָּבַישׁ, gabish' (properly ice; Sept. γαβίς), occurs only in Job 28:18, where it is rendered "pearls" in our version.
3. זכוּכַית, zekukith' (lit. what is pure or transparent; Sept. ὕαλος), occurs only in Job 18:17, where some regard it as denoting glass.
4. Κρύσταλλος (prop. ice) occurs in Re 4:6; Re 21:11; Re 22:1, evidently in the sense of crystal, and in such connections as to identify it in a good degree with the preceding terms.
" Crystal was anciently held to be only pure water, congealed by great length of time into ice harder than the common (Diod. Sic. 2:52; Pliny Hist. Nat. 37:2), and hence the Greek word for it, in its more proper signification, also signifies ice. From this it necessarily followed that crystal could only be produced in the regions of perpetual ice, and this was accordingly the ancient belief; but we now know that it is founding the warmest regions. Theophrastus (54) reckons crystal among the pellucid stones used for engraved seals. In common parlance we apply the term crystal (as the ancients apparently did) to a glass-like transparent stone, commonly of a hexagonal form, which, from being found in rocks, is called by mineralogists rock-crystal. It is a stone of the flint family, the most refined kind of quartz." SEE GLASS.