Relating to my older question (http://answers.minerals.net/7749/update-previous-question-rinsed-more-colorful-rocks-shown). I've been asking a few questions lately where I've grouped multiple rocks together in the same post because they are the same type of rock. These ones, however, are all different from each other and I can't quite figure out what they are. If I had to guess, I'm assuming the first one may be Green Quartz, the third one may either be Citrine or Orange Calcite, and the fourth one may be Blue Quartz. The second one, however, I am clueless on. In certain lighting it looks to be white and opaque, in other lighting I sometimes see a faint yellow/orange color. Or sometimes I'll see a faint green tint. The picture doesn't really help, I apologize. But does anyone have a guess what it or the other three could be? Any/all help is appreciated.
I'd appreciate if someone could confirm/disprove my guesses and if they are wrong, I'd like to know what they are. Thank you.