I've bought from them a few times, they send their gems by tracked mail and nicely packed and carded. The gems from my avatar photo are from them, bought some years ago. Recently I haven't seen anything interesting but they used to have some nice BIG Rubellite Tourmalines, some lovely pink Spinels, rainbow Moonstones, Danburite etc.
They do sell treated (heat, BE treated, dyed )or composite gems like Mojave Turquoise, dyed Welo Opals so if you want untreated, go for the gems that cannot be treated, like Garnet, Spinel, Chrysoberyl etc.