What color are your massage stones?

Another marketing myth perpetrated by numerous companies is that all hot stones should be perfectly round and only the deepest, darkest black. While the stones that we sell for our sets are generally as black as any basalt stone can be, it is not true that the color of a massage stone determines whether or not it will hold heat well and therefore whether it will "work" for hot stone massage. What determines how well a stone will retain heat, and therefore be useful for hot stone massage, is what its mineral composition is. What determines whether a stone is basalt or not is how it was form and the percent composition of Silica and Iron, as well as a few other trace elements. Basalt stone often time come in numerous colors depending on what those other trace elements are; yet their ability to hold and emanate both heat and cold doesn't change. We have determined through laboratory testing that the sources that we use for our massage stone are indeed basalt stone. Though the may vary in color all of the stone that we sell will hold heat as the should and be effective stones for any hot stone massage.