Schilderina achatidea, common name agate cowry, is a species of sea snail, a cowry, a marine gastropod mollusc in the family Cypraeidae, the cowries.

[1] The shell size varies between 22 mm and 50 mm.

The dorsum surface is usually brown, while the base is white.

This species can be found in the Mediterranean Sea and in northwestern Africa.

This Cypraeidae-related article is a stub.