Hetty, I found this at the Flea Market today. She had a couple of different styles. They are 6" balls. She calls them "Fairy Balls" or "Spirit Balls". What I liked about these is that they were not just colored in the glass, but had threads of glass coming up inside the ball. Very cool! They cost about $16.00. The lady is willing to ship. The picture is not so great as I took it with my junky cell phone. She has a Facebook page at facebook.com/orchidlakecandles. She does not have the balls listed on her site, but I bet if you were interested, she would send you pictures of what she has.
