lovely!!! can sapphire do well at high pressure depth? just curious and I prefer sapphire jim
J jameson1 · Registered Joined Apr 1, 2010 · 261 Posts #4 · Aug 19, 2014 View full thread lovely!!! can sapphire do well at high pressure depth? just curious and I prefer sapphire jim
J jameson1 · Registered Joined Apr 1, 2010 · 261 Posts #6 · Aug 19, 2014 View full thread H;mmm MM300 uses hardlex to prevent shatter