1. a milky iridescence or play of colors like that of an opal

Examples

• The soap bubble displayed beautiful opalescence in the sunlight.
• The mineral’s opalescence made it highly prized by collectors.
• She admired the opalescence of the mother-of-pearl shell.
• The glass vase had an opalescence that changed with the light.
• The oil slick on the water showed striking opalescence.
• The gemstone’s natural opalescence was enhanced by careful polishing.