These are among the most beautiful stone mezuzah cases that I have ever seen. The really special thing about them is that stone is not just a material that was added onto a shell as a decoration, rather, the case itself is stone! You can never stop looking at its beauty and seeing Hashem!! You’re seeing the natural work of his creation each time you enter the door! The stone has been polished and captures the natural light to will awaken within you a desire to polish your neshama by living according to the teachings that are mentioned within the mezuzah scroll: To love Hashem, the one God with all our hearts and serve him with all of our spiritual and physical resources, to teach our children.