Chrysoritis nigricans, the dark opal, is a butterfly of the family Lycaenidae found only in South Africa.

The wingspan is 22–33 mm for males and 23–38 mm for females. Flight period is multi-brooded from September to April, peaking October/November and March.

Larvae feed on Thesium species, Osteospermum polygaloides, and Zygophyllum species. They are associated with ants of the genus Crematogaster.

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