opaline

(s) 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
opalescent, pearlescent, iridescent, nacreous,

Synonyms

opalescent pearlescent iridescent nacreous

Words of close approximity

opalise opalize