We have two very special stupas with actual snow crystals from Mount Kailash in Tibet inside. We have the standard stupa and a Five Element Stupa choice.
Mount Kailash is a major Tibetan Buddhist pilgrimage site. It is said that is where Chakrasamvara resides. Guru Rinpoche practiced tantra there. It is where Milarepa battled Naro Bon Chung. The Five Element Stupa helps balance our own Five Elements within.