Fluorite

I've had this sample soooo long I can't remember where I found it. I've always assumed it's fluorite because it's purple. There are very few minerals that are properly purple. Even fluorite is only sometimes purple. However lovely, fluorite is too soft and brittle to be a gemstone. Mineral collectors love it, though, because it's purple. This sample is about 3 cm across. I note that my doubts are cause by the elongate rather than cubic looking cleavage, but if it were perfect, some collector would have collected it instead of me.