opalesce
1. [ verb ] reflect light or colors like an opal
Examples:

"Distant clouds opalesce like pale brocade" "raindrops caught in a sunbeam seem to opalesce"

Related terms: reflect opalescence
2. [ verb ] exhibit a play of colors like that of an opal
Examples:

"This nitrate opalesces under certain conditions"

Related terms: shine iridesce opalescence
Similar spelling:   opalescent
  opalescence
  opalise
  opalize