10 letters · 18 points in Scrabble
noun a brown or yellow-green olivine found in igneous and metamorphic rocks and used as a gemstone
originFrom Middle English crisolite, from Old French crisolite, from Medieval Latin crisolitus, Latin chrȳsolithus, from Ancient Greek χρῡσόλιθος (khrūsólithos), from χρῡσός (khrūsós, “gold”) + λίθος (líthos, “stone”). By surface analysis, chryso- (“pertaining to gold”) + -lite (“pertaining to rocks, minerals”).
Etymology from Wiktionary, CC BY-SA 3.0