In 1967, my mother bought the most beautiful ornament in the world from Hechinger's Hardware store in DC. It was Polish and the pink and white, yest still silvery mercury glass was so thin and fine that later when I was old enough to pay attention to such things, I could almost see through it. I still have the famous Baby Ornament as the family calls it and it sits at the very top of my tree every year. I'd post a photo but by the time I actually took the photo and got it downloaded it would be Lent so you'll have to trust my description.
Merry Christmas!