Pottery Barn 12 Days of Christmas Ornaments. Brand New in the Original Packaging. This set of mercury glass ornaments features a dozen unique bobbles, each representing a verse from the beloved holiday carol The Twelve Days of Christmas. Glittering and pearlescent, it’s a beautiful addition to your tree-trimming tradition or a thoughtful gift idea for someone on your list. Made of Mercury glass. 3″ w x 2″ d x 2.5 h. 4.5″ w x 1.5″ d x 2 h. 3″ w x 2″ d x 2.75 h. 3″ w x 1″ d x 2.5 h. 2.5″ w x 2.5″ d x 2.75 h. 2.75″ w x 3″ d x 3 h. 2.75″ w x 2″ d x 3.5 h. 2″ w x 2″ d x 2 h. 2″ w x 1.75″ d x 4.5 h. 2.25″ w x 1.5″ d x 5 h. 3″ w x 1.75″ d x 5 h. 1.75″ w x 1.75″ d x 5 h.