opalesce
— Verb
– English
~ reflect light or colors like an opal; "Distant clouds opalesce like pale brocade"; "raindrops caught in a sunbeam seem to opalesce"
opalesce
— Verb
– English
~ exhibit a play of colors like that of an opal; "This nitrate opalesces under certain conditions"
opalise
— Verb
– English
~ replace or convert into opal; "opalized tree trunks"