It is a very soft mineral and rates at a 2 on the Mohs Scale therefore needs to be stored with care in its own cloth so that it doesn't get scratched. 
Some people believe it is a "self-cleansing crystal" and this may be because it cannot be cleaned with water or salt or anything but a dry cloth or it will get damaged. Prolonged exposure to sunlight may cause it to lose its luster.
 
         
         
         
         
         
         
         
         
    
    
      
      
        
      
      
    
      
      
        
          
        
      
      
        
        
          
        
        
 
      
    
      
      
        
          
        
      
      
        
        
          
        
        
 
      
    
      
      
        
          
        
      
      
        
        
          
        
        
 
      
    
      
      
        
          
        
      
      
        
        
          
        
        
 
      
    
      
      
        
          
        
      
      
        
        
          
        
        
 
      
    
      
      
        
          
        
      
      
        
        
          
        
        
 
      
    
      
      
        
          
        
      
      
        
        
          
        
        
 
      
    
      
      
        
          
        
      
      
        
        
          
        
        
 
      
    
      
      
        
          
        
      
      
        
        
          
        
        
 
      
    
   
    
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
   
    
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
   
    
    
      
      
        
      
      
    
      
      
        
          
        
      
      
        
        
          
        
        
 
      
    
      
      
        
          
        
      
      
        
        
          
        
        
 
      
    
      
      
        
          
        
      
      
        
        
          
        
        
