True damasks are pure silk.

[…]but what struck Tom's fancy most was a strange, grim-looking, high backed chair, carved in the most fantastic manner, with a flowered damask cushion, and the round knobs at the…

Madame de Mercœur had herself arranged her dress, which was splendid white silk, damasked with silver flowers; but it was with much internal misgiving that she put on the graceful…