I needed to restock my glitter supply recently. So I ordered glass glitter in several colors from this place. http://www.glassglitterandbeads.com/servlet/StoreFront
I am really pleased with it. It doesn't fly all over like the lightweight glitter and you can brush it off your hands.
She has lots of colors and most of it comes in fine, medium and large. I bought a variety of sizes to see what they were like. I like the medium better than the fine but I guess it would depend on the intricacy and size of the project.