I love stone beads. Almost any kind of stone, probably turquoise is on the top of the list, but it's a close race. I love jasper: Red jasper, leopard jasper, picture jasper, bloodstone, etc. Nice rich colors. I love quartz, almost any kind except the violently dyed versions and the ones manufactured in vivid magenta, or other kool-aid colors. I love rose quartz, white quartz, rock crystal, amethyst and citrine. I love aventurine in any color, but the ordinary green is my favorite. I really like just about anything in just about any shade of green, except swarks. I love agates, almost any kind, again, except the violently dyed ones. I LOVE carnelian in both the natural shades and the kind that's dark red having been sugared and baked. I love lapis. I love sodalite. I love garnet. I especially love garnet because the river in NH that was my favorite hangout for years was washed in it, tiny little bits of garnet, pink-looking, in the sand. I love lepidolite. I love magnesite. I love hematite. I love black tourmaline, pink and green tourmaline. I love rainbow obsidian, snowflake obsidian. I love howlite, undyed, plain white. I pretty much have never found a natural stone I don't like. There may be one but I can't remember it.
I love freshwater pearls in natural colors. Mostly small to medium sized ones. Dyed dark pink? Nope.
I love shell. Again, natural shell, not dyed. There are some that are dyed that are okay, but they aren't my first choice.
I love bone beads.
I like wood beads.
I love good metal beads, copper, brass, sterling silver, silver plated and even nickel. Not gold plated though.
I love seed beads, Czech being my favorite. Japanese are good for tight and even weaving but I'm not stuck on them, I don't have to have those. Brass-lined crystal E beads are only one of my favorites here.
I do like glass beads, druks, fire polished without AB coatings, I hate AB. Some of the other coatings are okay, apollo gold is nice in small doses. It depends on the bead itself here, some I like quite a lot, others I really don't like at all. I really do like the shaped Czech beads, flowers, leaves, vintage kinds, etc. Without AB or other kinds of coatings.
I love really good lampwork.
Beads I don't like? Swarovski. Swarovski anything. I hate them. I'm serious, I don't like swarks. I don't like plastic beads either, not even the newer lucite things.
This can all be summed up like this: I love the natural stuff, I hate the flashy overly colored fake stuff.