Founders Sharon Leslie and Julia Schoen have always been captivated by natural stones, and they say that "Black Obsidian is the most potent of all crystals" – it was used as a form of psychic protection by some ancient civilizations. Made from toxin-free glass and stainless steel, GLACCE's water bottle is set with a one-of-a-kind stone that creates a crystal elixir when water is added. - Holds 18 fl.oz. of water - Bottle is made from glass and stainless steel without glue or adhesives - Each crystal is one-of-a-kind and as such may have some small flecks or scratches