Fulgurite from the Mauritanian Desert, under a glass dome, on a brass base
        
    
    
            
    
        
    
MINERAL
            
                Active filters
            
            
        
    
            Crystal with prehistoric water on brass machinery
        
    
    
            
    
        
    
            Agate slice from Brazil (1kg) on brass stand
        
    
    
            
    
        
    
            Malachite pebble (575g) from Congo, on black base
        
    
    
            
    
        
    
            Amazonite prism  (Madagascar), black base
        
    
    
            
    
        
    
            Sandcalcite aggregate from Hungary, under glass
        
    
    
            
    
        
    
 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                     
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                