The alkali content of deep blue Burmese aquamarine BM-1 and dark blue Brazilian aquamarine BRA-3 differed noticeably from those of other samples. Li, Rb, and Cs contents were more than 10 times higher ...

They come in a booklet, with a clear cover over and a cardlike paper with a blue mandala pattern at the back, which is really neat and beautiful. The colors are quite neon and bright and look exactly ...