opalesce

verb

1. reflect light or colors like an opal

   verb.weather

   Examples

   Distant clouds opalesce like pale brocade.

   Raindrops caught in a sunbeam seem to opalesce.

   Source: WordNet 3.0

2. exhibit a play of colors like that of an opal

   verb.stative

   Examples

   This nitrate opalesces under certain conditions.

   Source: WordNet 3.0

3. To give forth a play of colors, like the opal.

   verb

   Source: webster1913