Also pronounced SY-a-nee (think "cyanide"), or can rhyme with Diane: sy-ANN. The French pronunciation is see-AHN.
The naiad who opposed Hades when he abducted her playmate Persephone. After failing to prevent him from doing so, Cyane dissolved away in tears, changing into a fountain or spring.
Another nymph named Cyanee was mother of the twins Byblis and Caunus.
Cyane was also a daughter of Cyanippus.