This transparent sapphire glass has a hardness that ranks nine out of ten in the Mohs scale, making it the hardest material second to diamond. The premium-quality piece also features anti-impact and anti-scratch properties and high melting temperature. 

• Sapphire crystal glass
• Rectangle shape & any other shape 
• Hollow design
• High quality & craftsmanship
• Available other special design
• 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 for any drawing & details.