2

I've always had Crystals, I do believe they do something, although I don't use them. I just have them sitting on my jewellery box. Sometimes though, one calls me and I carry it around with me for the day. I don't know if it helps or not, but I'll never get rid of them.

2,
Camera Mode A, WB manually set
Things I did - ISO-800, f5.6, 50mm, no flash, focus, meter mode pattern
Things camera did - 1/40
Processed in GIMP - adjusted histogram levels to bring out white highlights.