I personally visited their workshop in Fiskars today, and saw the guy (Tarmo Maaronen) was making snails out of glass. I bought one as they were really adorable, mentioned I keep huge snails, and he got interested! I said, "I can show you a pic", and he said "Yes, do that, I'll take a copy of it!".
I showed him a picture of my biggest snail, Gaius the Tiger, and he indeed took a copy of it for inspiration, and complimented on the nice shape of the giant snail's shell.
They are. I actually found one of his earlier snail designs in a second had store! I've taken some pics that are much more flattering than the ones on his page, I just have to get around to uploading them.