Sapphire glass never wear

        sapphire glass never wear? Swiss watch brand,www.finest4uwatch.com, brand watches,http://www.breitling-heuer.com, mechanical watches, ultra-thin couples watches,www.finest-swiss-watch.com, quartz watches, sapphire watches this statement is not scientific,www.luxuryshopsale.com, any matter not probably never wear, should be " is not easy to wear ". At present the sapphire hardness second only to diamond hardness Mo – 9 degrees 10 degrees, while the ordinary glass hardness of Mo 5-6 degree

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