Jan 25 2015

Sapphire glass never wear

        sapphire glass never wear? Swiss watch brand, brand watches,http://www.super-replica-watches.com, mechanical watches,tag heuer watches, ultra-thin couples watches, quartz watches,http://www.heels4usale.com, sapphire watches this statement is not scientific, any matter not probably never wear,http://www.timesaleon.com, 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