I put up a review of the i.Fairy Crystal Browns on youtubez.
I'm not a very elegant speaker so I think next time I will just use pictures and annotations <_<
Something I didn't mention in my review is that I decided to measure the lens to double check the diameter, because there seems to be confusion as to what the real diameter is. The entire lens, including the clear area, is like... 15.8mm. Measuring the color only, it's about 15.5mm.
I stupidly forgot to take a picture >: I'll take one soon and add it.
Here are the pics!
I seem to have made a mistake when I read it initially. They are actually 15mm on the dot. But they look so much bigger @__@
Anyway, here's the review :D