This sapphire watch glass has a hardness that ranks nine out of ten in the Mohs scale, making it the hardest material second to diamond. It is also designed to be anti-impact, anti-scratch. Frame and complete meticulously designed and carefully assembled watches with this highlighted piece.

• Sapphire crystal glass
• Elegant design  
• Mat details
• High quality & craftsmanship
• An anti-impact and anti-scratch design.
• With high corrosion resistance.
• With high electrical resistance.
• Available custom design & drawing
• Available any coating & metallization
• Vicker hardness: 2000 - 2500 daN/mm2
• Tensile strength: 26 daN/mm2
• Flexural strength: 35 - 39 daN/mm2
• Welcome inquiry into any drawing & details