iridescent nacreous opalescent opaline pearlescent
iridescent%5:00:00:bright:00 nacreous%5:00:00:bright:00 opalescent%5:00:00:bright:00 opaline%5:00:00:bright:00 pearlescent%5:00:00:bright:00
mavričen opalen
having a play of lustrous rainbow colors
an iridescent oil slick nacreous (or pearlescent) clouds looking like mother-of-pearl a milky opalescent (or opaline) luster