The experience effect of each natural stone and crystal is different. ''Ruby'' has a strong red fluorescence under UV light and a beautiful satin luster; ''Pumice Stone'' is the lightest of all minerals and is mostly used to make dead skin; ''Mica''，also called isinglass, is a natural mineral that is characterized by its thin peeling nature; ''Iceland spar'' is a transparent calcite with birefringence; ''Labradorite'' is a member of the feldspar family, with the main blue color changing in light, displaying shades from the deepest blue to various shades of light blue, almost blue-green; ''Yooperlite'', also known as Fire Stone or Flame Stone, it is a fluorescent mineral that emits bright orange and yellow colors under UV light; ''Shungite'' contains 30% to 90% carbon, and due to such a high proportion of carbon, the prominent feature of Shungite is high electrical conductivity (1500 mho/m), etc;