Facebook's prude police are out in force yet again, this time threatening action against a Sydney jeweller for posting pictures of an exquisite nude porcelain doll posing with her works.

Victoria Buckley, who owns a high-end jewellery store in the Strand Arcade on George Street, has long used dolls as inspiration for her pieces and hasn't had one complaint about the A3 posters of the nudes in her shop window.

But over the weekend she received six warnings from Facebook saying the pictures of the doll, which show little more than nipples, constituted "inappropriate content" and breached the site's terms of service.

The warnings said Facebook would remove the images and Buckley is worried she will be banned from the site if she posts them again.