A noun appearing as ᴱQ. alas (alast-) “marble” in the Qenya Lexicon of the 1910s derived from primitive ᴱ✶ʒalast- (QL/30).
Neo-Quenya: I think this word may be salvageable in Neo-Quenya as ᴺQ. alas, reconceived as a derivative of ᴹ√GALAS “joy, be glad”, perhaps from ᴺ✶galast- originally with the sense “thing pleasant to touch”.
A word in the Qenya Lexicon of the 1910s given as ᴱQ. alasta “of marble, marble”, an adjectival form of ᴱQ. alas (alast-) “marble” (QL/30).
Neo-Quenya: I think it might likewise be used in Neo-Quenya as ᴺQ. alasta, an adjectival form of ᴺQ. alas “marble”.