Fulgurite from the Mauritanian Desert, under a glass dome, on a brass base
        
    
    
            
    
        
    
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            Slice of amethyst geode bordered with agate, black base
        
    
    
            
    
        
    
            Agate slice from Brazil (1kg) on brass stand
        
    
    
            
    
        
    
            Crystalized branch with gypsum under glass (Wahpool lake, Australia)
        
    
    
            
    
        
    
            Sandcalcite aggregate from Hungary, under glass
        
    
    
            
    
        
    
 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                     
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                 
                                                                 
            
                                                                                                                                                