Pumice : is a type of extrusive volcanic rock, produced when lava with a very high content of water and gases (together these are called volatiles) is extruded (or thrown out of) a volcano. As the gas bubbles escape from the lava, it becomes frothy. When this lava cools and hardens, the result is a very light rock material filled with tiny bubbles of gas. Pumice is the only rock that floats on water, although it will eventually become waterlogged and sink. It is usually light-colored, indicating that it is a volcanic rock high in silica content and low in iron and magnesium, a type usually classed as rhyolite
Taken from /read more here : Mineral Information Institute http://www.mii.org/Minerals/photopumice.html
Hot Volcanic Stone Massage : Hot stone massage is a specialty massage that uses smooth, heated stones. They are often basalt, a black volcanic rock that absorbs and retains heat well, but they can be other types. The heat is both deeply relaxing and helps tight muscles release.
Taken From /read more here: What is a Hot Stone Massage http://spas.about.com/od/hotstonemassage/a/Hotstone.htm
Volcanic clay and ash are used today in many beauty masks ,cleansers and exfoliants . For its nourishing detoxing properties . I had one at a spa and it left my skin all glowy and fresh . My face felt balance oil wise for days . You can also find beautiful jewlery made of volcanic materials . Each time I visit my realitives in Seattle , in most of the fine Washington State gift shops . You can find a piece of jewlery made from Mt St Helens Ash . So here is a short but sweet look into the Glamourous Rock Star world of the Mighty Volcano.