It’s one of the top buzzwords of the year in mobile technology: the sapphire screen. More appropriately called a sapphire crystal display, its remarkability lies not in clarity or resolution or thumb-feel … but in saving us from our oafish, clumsy-handed selves.Sapphire crystal is hard, see – harder than anything on the good ‘ole Mohs hardness scale except diamond (as we discussed in a piece last year on
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