I took this photo the other day at the Houston Museum of Natural Science. I usually try do more than one thing when I go all the way to Houston. I go to a museum or the zoo, or a meeting. I don’t like to drive all the way up there just for an hour or two. I don’t remember what kind of crystals these were. I’m pretty sure the big white one is quartz (but not positive), but I don’t remember what the ‘peach’ ones were. Anybody have any ideas?