For some unknown reason I am always drawn to things with a vintage feel and mercury glass is certainly no exception. I love the way you can almost see through it if you hold it up to the light. Apparently true vintage mercury glass had double walls with silver nitrate sealed between the walls to give the silver appearance. Although mine are not double-walled, they have now become one of my favorite Christmas decorations. I usually line them up on our marble mantle and I decorate the whole fireplace with silver ornaments. Hopefully Santa won't knock them over when he comes down the chimney this year!