Red Sapphire Crystal Workpiece for Wristwatch – Anti-Scratching, 99.999% Pure
In the realm of haute horlogerie, where every component embodies perfection, our Red Sapphire Crystal Workpiece represents the pinnacle of material engineering. Meticulously crafted from synthetic sapphire (Al₂O₃), this exquisite component redefines the standards for watchmaking excellence. The vibrant chromium-doped red coloration not only delivers breathtaking aesthetics but also maintains the legendary Mohs 9 hardness that has made sapphire the material of choice for discerning watchmakers worldwide.
Beyond its stunning visual appeal, this sapphire crystal integrates cutting-edge material science with traditional Swiss watchmaking precision. Each piece undergoes 200+ hours of precision machining and polishing to achieve optical clarity rivaling gem-grade diamonds while providing unparalleled scratch resistance - a critical feature for timepieces meant to last generations. The material's inherent chemical inertness ensures it remains pristine when exposed to seawater, perfumes, and daily wear, while its thermal stability guarantees performance in extreme environments from Arctic cold to desert heat.
Key Features of Red Sapphire Crystal Workpiece
Ultra-High Purity & Durability
99.999% pure Al₂O₃, ensuring no impurities affect structural integrity.
Mohs hardness 9, resistant to scratches from metals, sand, and everyday abrasives.
Exceptional Optical Quality
High light transmission (>90%) for clear readability.
Anti-reflective (AR) coating options to reduce glare.
Aesthetic Excellence
Vibrant red color for luxury appeal.
Polished to mirror finish (Ra <5 nm) for premium look.
Thermal & Chemical Resistance
Melting point ~2,050°C, stable under extreme conditions.
Inert to acids, oils, and UV radiation, ensuring long-term color stability.
Customizable Designs
Shapes: Round, square, tonneau, or custom geometries.
Thickness: 0.5 mm to 3 mm (±0.05 mm tolerance).
Edge treatments: Beveled, domed, or flat edges.
Applications
Luxury Watchmaking
Watch crystals for high-end brands.
Exhibition casebacks showcasing mechanical movements.
Special Edition & Limited Series
Colored sapphire crystals for designer collaborations.
Skeleton watches with tinted windows.
Industrial & High-End Accessories
Durable covers for smartwatches.
Premium eyewear lenses and camera protectors.
Jewelry & Decorative Use
Cabochons for rings/pendants with scratch-resistant properties.
Specifications
| Parameter | Value |
| Material | Synthetic Sapphire (Al₂O₃) |
| Color | Red |
| Hardness | 9 Mohs |
| Light Transmission | >90% (visible spectrum) |
| Surface Finish | Mirror polish (Ra <5 nm) |
| Thickness | 0.5–3 mm (±0.05 mm) |
| Diameter/Shape | Customizable (round, square, etc.) |
| Thermal Stability | Up to 1,800°C (inert atm.) |
| Chemical Resistance | Resists acids, solvents, saltwater |
Q&A
Q1: How does red sapphire compare to mineral glass or acrylic watch crystals?
A1: Sapphire is 10x harder than mineral glass and 100x harder than acrylic, offering near-diamond scratch resistance.
Q2: Can the red color fade over time?
A2: No. The Cr³⁺ doping is thermally stable; color remains vibrant even under UV/sunlight.
Q3: Is AR coating necessary for watch crystals?
A3: Recommended for glare reduction (e.g., sunlight readability), but uncoated sapphire already has >90% transmission.
Q4: How to clean sapphire watch crystals?
A10: Use microfiber cloth + mild soap; avoid diamond paste (can scratch other materials).
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Red Sapphire Crystal work piece For Wristwatch anti scratching 99.999% Images
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