SHANGHAI FAMOUS TRADE CO.,LTD
| Payment Terms | T/T |
| Delivery Time | 2-4 weeks |
| Supply Ability | BY CASE |
| Packaging Details | custom cartons |
| Chemical Formula | Al₂O₃ (Aluminum Oxide) |
| Crystal Structure | Trigonal (Hexagonal system) |
| Hardness (Mohs Scale) | 9 |
| Density | 3.97 – 4.0 g/cm³ |
| Refractive Index | 1.76 – 1.77 |
| Colors | Blue, Pink, Gray-Violet |
| Brand Name | ZMSH |
| Place of Origin | CHINA |
| Model Number | ZM-03 |
View Detail Information
Explore similar products
Red Single Sapphire Crystal Glass , Custom Sapphire Watch Crystal Transparent
Thickness 3.75mm Sapphire Crystal Watch Case Blue 9H High Hardness Abrasion
Pink Blue Color Sapphire Crystal Watch Glass Replacement Customized Size
Pink Sapphire Crystal Watch Case Polished Surface Wear Scratch Resistance
Product Specification
| Payment Terms | T/T | Delivery Time | 2-4 weeks |
| Supply Ability | BY CASE | Packaging Details | custom cartons |
| Chemical Formula | Al₂O₃ (Aluminum Oxide) | Crystal Structure | Trigonal (Hexagonal system) |
| Hardness (Mohs Scale) | 9 | Density | 3.97 – 4.0 g/cm³ |
| Refractive Index | 1.76 – 1.77 | Colors | Blue, Pink, Gray-Violet |
| Brand Name | ZMSH | Place of Origin | CHINA |
| Model Number | ZM-03 | ||
| High Light | Luxury Sapphire Watch Case ，Customize Sapphire Watch Case ，Scratch Resistant Sapphire Watch Case | ||
This watch case features a laboratory-grown sapphire body in a striking gray-violet hue, complemented by a vivid, artistic dial inspired by Van Gogh's The Starry Night. Sapphire watch cases are known for their exceptional hardness, scratch resistance, and luxurious transparency. Combining cutting-edge synthetic crystal technology with artistic expression, this sapphire case is ideal for luxury watch collectors and avant-garde timepiece designers.
Laboratory-grown sapphire watch cases are primarily produced using the Kyropoulos or Czochralski crystal growth method, followed by precision machining and polishing:
Crystal Growth: High-purity aluminum oxide (Al₂O₃) is melted at 2,050°C and slowly crystallized to form a large single-crystal sapphire boule.
Color Doping: Trace elements such as chromium, titanium, or iron are added during growth to yield colored variants like violet, gray, or pink.
Cutting: The boule is sliced using diamond wire saws into blanks for further processing.
CNC Machining: Sapphire blanks are meticulously milled into precise case geometries using diamond-coated tools.
Polishing: Multi-stage polishing with alumina slurry achieves high transparency and a jewel-like surface.
Drilling & Assembly: Holes for crowns, screws, and glass are ultrasonically drilled, and the final case is ready for watch assembly.
| Property | Value |
|---|---|
| Chemical Formula | Al₂O₃ (Aluminum Oxide) |
| Crystal Structure | Trigonal (Hexagonal system) |
| Hardness (Mohs Scale) | 9 (next to diamond) |
| Density | 3.97 – 4.0 g/cm³ |
| Transparency | >85% (visible range, polished) |
| Refractive Index | 1.76 – 1.77 |
| Melting Point | ~2050°C |
| Thermal Conductivity | ~35 W/(m·K) |
| Young’s Modulus | ~345 GPa |
| Standard Colors | Transparent, Blue, Pink, Gray-Violet |
Sapphire, particularly synthetic variants, is widely used in the jewelry and luxury goods sectors:
Watch Components: Cases, bezels, crowns, and sapphire crystal glasses for scratch resistance and visual appeal.
Jewelry Stones: Lab-grown blue, pink, and yellow sapphires offer cost-effective, ethical alternatives to mined gems.
Luxury Accessories: Used in cufflinks, rings, and even smartphone decorative elements.
Optical Jewelry Fusion: High-transparency sapphire is used as a fusion of form and function in tech-luxury gadgets.
Q1: Is synthetic sapphire real sapphire?
Yes. Laboratory-grown sapphire has the same chemical composition and physical properties as natural sapphire—it is simply grown under controlled conditions.
Q2: Why choose sapphire for watch cases?
Because of its unmatched hardness (Mohs 9), it is extremely resistant to scratches and abrasion, ensuring long-term clarity and elegance.
Q3: Can colored sapphire watch cases fade over time?
No. The color is inherent to the crystal and does not fade under UV or normal usage conditions.
Q4: Can sapphire cases be customized?
Yes. Color, size, finish, and even engravings can be customized during the manufacturing process, especially with CNC and laser technology.
Related products
Lab-Grown Sakura Pink Sapphire Watch Case
Company Details
Business Type:
Manufacturer,Agent,Importer,Exporter,Trading Company
Year Established:
2013
Total Annual:
1000000-1500000
Ecer Certification：
Verified Supplier
SHANGHAI FAMOUS TRADE CO.,LTD. locates in the city of Shanghai, Which is the best city of China, and our factory is founded in Wuxi city in 2014. We specialize in processing a varity of materials into wafers, substrates and custiomized optical glass parts.components widely used in electronics, op... SHANGHAI FAMOUS TRADE CO.,LTD. locates in the city of Shanghai, Which is the best city of China, and our factory is founded in Wuxi city in 2014. We specialize in processing a varity of materials into wafers, substrates and custiomized optical glass parts.components widely used in electronics, op...
Get in touch with us
Leave a Message, we will call you back quickly!