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SAPPHIRE: Some of our timepieces are tted with sapphire crystals. Our sapphire is cut from
a polished portion of solid sapphire� Sapphire is measured in hardness at nine (9) on the Mohs
scale� It is so hard that only a diamond which measures ten (10) on the Mohs scale can scratch it�
MINERAL CRYSTAL: Some of our timepieces utilize high quality hardened mineral crystals and
most are coated on the surface with our sapphire/diamond coating called, Diamondfx®, and are
AR (anti-reective) coated on the underside. It is made of a material that has an index of refraction
that is somewhere between air and glass, minimizing glare�
COATINGS: Usually the undersurface of the sapphire and mineral crystals are coated with
proprietary aerospace technology that helps block the sun’s UVA, UVB, and UVC rays; reducing
watch dial degradation�
sapphIre or hardened mIneral WatCh CrYstal WIth
dIamondFx
®
CoatIng
American Star
®
Gen. 1 Automatic
®
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