Opaline may refer to:
- Opaline, a group of protists
- Opaline, an album by Dishwalla
- Opaline glass, decorative French glass
- Opaline silica: an amorphous or cryptocrystalline form of hydrated silica SiO2·nH2O (Opal)
- Opaline, a colour mutation of the budgerigar, Melopsittacus undulatus
This disambiguation page lists articles associated with the title Opaline.
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