The featured watch glass dome is made of sapphire crystal and has high luster and excellent hardness. It comes in a transparent design and has metallization on top of middle. The sapphire 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, and with high electrical resistance.

• Sapphire crystal glass
• Special watch dial
• Domed on the top of middle
• Metallization on the top of middle
• High quality & craftsmanship
• Available custom design & drawing
• Available any coating & metallization
• High melting temperature 2030 C
• Resistance to Scratch & Corrosion
• Vicker hardness: 2000 - 2500 daN/mm2
• Tensile strength: 26 daN/mm2
• Flexural strength: 35 - 39 daN/mm2
• Welcome inquiry for any drawing & details.