Alabastrítes, alabastrítæ, pen. longa. masc. gen. Plin. Alabaster: found especially about Thebes in Egipt.
Lewis and Short: Latin dictionary
ălăbastrītes, ae, m., = a)labastri/ths. I.A stone, composed of carbonate of lime (not of gypsum, like the modern alabaster), alabaster-stone; also called onyx and onychites, from which unguent and perfume boxes were made, Plin. 36, 8, 12, 60.—II.A precious stone found in the region of the Egyptian town Alabastron, Plin. 37, 10, 54, 143.