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buy duphaston Of course, an iPhone touchscreen isn???t made from the same glass as a beer bottle. Rather, it contains a range of so-called rare earth elements, including indium, a valuable mineral that???at the time I write this chapter??? costs more than $200 per pound. Alas, there is no commercially viable means of extracting indium from touch-screen glass, and there is unlikely to be one (the amount of indium in a touch screen doesn???t amount to more than a pinch, rendering its extraction a very dubious business indeed). For the foreseeable future, indium???one of the rarest of elements???will likely be mined, used in a single iPhone, and then lost for good.