Acanthopleura gemmata, the jewelled chiton, is a species of chiton in the family Chitonidae.

[1] This large species of chiton grows to be about 7 cm (3 inches) in length.

It has oval shaped body with dimpled plate margins, a brown girdle with eight overlapping plates, long calcareous spicules and dark bands.

This chiton has an Indo-Pacific distribution.

This species lives in the littoral zone of coral reefs on the rocks and cliffs.