I am now carrying the "Mystic" cleaning gun used with water to clean minerals and remove crusts etc from mineral specimens.  These have bee around for many years made in China.  The new improved cleaning guns are now made in India.  They do wonders and are well worth the money.  They cut specimen cleaning time substantially.  Following the recommended usage and care, they should last many years.  I usually do not follow the recommended distilled water etc.  I just use hard water out of the tap and they still last for a several years.  Also there are replacement springs etc but again I usually just get a new one since the cost is rather inexpensive. 

$ 180.00