Qhov tseeb, saib ntawm "lub ntsej muag" kom paub tias ntuj travertine qhov tsis sib npaug, kev ntxhib los mos yog qhov sib txawv ntawm qhov tob, yooj yim tawg, tus nqi siab dua, thiab cov nyhuv zoo nkauj zoo nkauj.
Artificial imitation travertine xim, lis, qhov nyhuv ntawm txhua daim yog tib yam, tsuas yog saib zoo sib xws, tag nrho cov nyhuv tseem txawv, unnatural, qhov zoo dua yog lub zog zoo, yooj yim rau tu, tus nqi pheej yig dua.
