a Strong and Anti-Reflective Sapphire Glass Optical Lens Used in Hourglasses

a Strong and Anti-Reflective Sapphire Glass Optical Lens Used in Hourglasses. High Hardness & Durability: Mohs hardness of 9, second only to diamond, ensuring extreme scratch resistance. Customizable Specifications: Customizable shape, size, thickness, and coatings based on specific requirements. Excellent Chemical Resistance: Resistant to strong acids and bases, insoluble in water, except HF and hot phosphoric acid. High Precision Polishing: Optical polishing grade with Ra<5nm, ensuring high surface quality and clarity. Versatile Application Scope: Suitable for aerospace, medical devices, semiconductors, and high-end consumer electronics. Certified Quality Assurance: RoHS and ISO9001 certified, with 100% inspection for finished products.