Does anyone know where I can go to buy some genuine Chalcedony, Moonstone, Onyx, Hematite, and White Opal?

I've been trying to find these everywhere, but can't. All I can find them at are online shopping sites. I want a physical store with a person I can look in the face, so I can actually tell if they're selling me the genuine article, or a guaranteed piece of crap. NO runaround, NO imitation. NO hle. Any ideas. And be serious. Any smart-alack remarks WILL be reported. Just a forewarning. If there's one thing I don't joke about, it's gemstones.