This is ultra-energy amorphous quartz used in the reaction furnace during the manufacturing of Phiten products such as crystal necklaces. It is a rare product, with only a very small amount produced when dismantling the equipment for improvements or expansion of the Filed device. This item was purchased from (Stock Company) Filed Active [currently (Stock Company) Proactive]. There are no original instruction manuals. Please search for "Filed Nigiribo" (Filed grip bar). There is no case or box. It has been stored without use. There are no noticeable scratches, but there may be some surface scuffs. Please forgive any oversights. Please consider this item, understanding that it is a used product. No returns or refunds, please.