Fabricius, 1787 [1] Euchalcia variabilis, the purple-shaded gem, is a moth of the family Noctuidae.

The upperside of the forewings is varied with rosy in the basal area.

The larvae are green with a black head, numerous blackish dots, a dark stripe on the back, and a yellow lateral line.

This species closely resembles Euchalcia bellieri, but it is quite larger.

[1] The moth flies from June to August depending on the location.