Amethyst, citrine, and jade I think? I'm not sure about the reddish ones, but I know there are garnets out here.
Another week and they should be shiny, according to the manual.
I don't know the model, it's very basic though. It came from Vevor for about $80. It handles a pound at a time and works fine. It came with all the grit and a big bag of cool rocks, too.