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Sapphire Crystal Watch Glass Watch Replacement Polished Sapphire Crystal Lens H9 For Patek Philippe
Sapphire Crystal Watch Glass Description:
Sapphire is the general name for corundum stones of all colors except the red ruby. Its main ingredient is alumina (AI2O3). Sapphire glass is a synthetic sapphire,Gem-grade sapphires can be easily and cheaply produced in the laboratory and have
Chemical composition
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Al2O3
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Density
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3.98g
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bending strength
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320-930Pa
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Vickrs hardness
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1800-2200
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optical transmission
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>90%
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melting point
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2050℃
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Mohs hardness
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9(Next only to diamonds:10)
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Bevel
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0.1-0.5mm
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Coating
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upon customer request
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Material
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Sapphire
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Shape
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Round, square, rectangle; flat, dome, curve, bridge ,pot Cover shape, etc.
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Size
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Customized according to customers requirement
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