Masonic Napkin Hook Blue Enamel. This Masonic Napkin Hook with Blue enamel is available in sterling silver or silver plate. It clips onto a shirt or jacket button. By moving the little ring down towards the 2 rounds discs it will insure your napkin is held securely in place. All our napkin hooks with Masonic motif are made by our silver smith in the UK. The sterling Silver Masonic Napkin hook is also fully hallmarked. Both are box in little gift box.