κρύσταλλος (krýstalloskroos'-tal-losnouncrystal)
[Grk] κρύσταλλος LN: 2.11, 2.46 GK: G3223, G3224 Hebrew: אַפִּרְיֹון, בְּדֹלַח, קִיטֹור, קֶרַח
Derivation: from a derivative of κρύος (frost);
Strong's: ice, i.e. (by analogy) rock "crystal"
KJV: --crystal.