Custom synthetic sapphire ingots, optical components, and precision crystal parts β engineered to your exact specifications for electronics, optics, defence, and industrial use.
All products are manufactured to customer specifications. We supply raw ingots, semi-finished blanks, and fully finished optical and mechanical components.
Single-crystal AlβOβ ingots grown by the Kyropoulos or EFG method. Available in multiple orientations (c-plane, a-plane, r-plane, m-plane) and diameter ranges from 25 mm to 200 mm.
High-transmission sapphire optical components for UV, visible, and IR wavelengths (0.15β5.5 Β΅m). Ideal for harsh environments requiring both optical clarity and mechanical durability.
Precisely cored and ground cylindrical sapphire rods at customer-specified diameter and orientation. Used for fiber guides, laser components, and high-pressure viewports.
Rectangular sapphire blanks cut and lapped to customer dimensions. Suitable for structural windows, armor applications, and machined substrates requiring flat parallel surfaces.
Polished sapphire wafers for epitaxial growth (GaN, LED), semiconductor fabrication, and thin-film deposition. Double-side polished options with orientation flats or notches.
Domes, prisms, tubes, nozzles, bearings, and bespoke shapes machined from sapphire to your drawings. We work from CAD files and provide samples for approval before full production.
Sapphire's unique combination of hardness (Mohs 9), optical transparency, chemical inertness, and thermal stability makes it the material of choice across many demanding industries.
Camera lens covers, phone cover glass, fingerprint sensor windows β sapphire protects precision optics in flagship smartphones and wearables.
Scratch-resistant watch crystals and bezels for premium watchmakers, combining optical clarity with extraordinary hardness for daily wear protection.
Windows, prisms, and optics for spectroscopy, laser systems, and precision measurement instruments where optical purity is non-negotiable.
Missile domes, armour windows, and sensor covers engineered to survive extreme environments including high velocity, temperature, and pressure.
High-quality c-plane and r-plane substrates for GaN-on-sapphire LED epitaxy. Epi-ready wafers with tight bow, warp, and TTV specs.
Biocompatible sapphire components for surgical instruments, endoscope tips, and implantable optical sensors requiring sterilisability and chemical resistance.
Diamond-anvil cell windows and high-pressure vessel viewports. Sapphire withstands extreme pressures while maintaining optical access to the sample.
Corrosion- and abrasion-resistant components for chemical processing, high-temperature furnace viewports, and wear-resistant mechanical parts.
Synthetic single-crystal AlβOβ β reference values for material selection and engineering calculations.
| Property | Value | Unit | Notes |
|---|---|---|---|
| Crystal Structure | Hexagonal (Corundum) | β | AlβOβ, trigonal symmetry |
| Hardness | 9 | Mohs | Second hardest natural material |
| Vickers Hardness | 1800 β 2200 | HV | Orientation dependent |
| Density | 3.99 | g/cmΒ³ | β |
| Melting Point | 2053 | Β°C | β |
| Thermal Conductivity | 23 β 46 | W/(mΒ·K) | At room temperature |
| Optical Transmission | 0.15 β 5.5 | Β΅m | UV to mid-IR |
| Refractive Index (no) | 1.768 | β | @ 632.8 nm |
| Refractive Index (ne) | 1.760 | β | @ 632.8 nm, c-axis |
| Dielectric Constant | 9.3 / 11.5 | β | β₯ / β₯ c-axis, @1 MHz |
| Compressive Strength | 2000 | MPa | β |
| Young's Modulus | 345 β 400 | GPa | Orientation dependent |
| Chemical Resistance | Excellent | β | Inert to most acids & alkalis |
| Purity (typical) | > 99.99 | % | AlβOβ |
From first enquiry to delivery β a straightforward, collaborative approach to custom sapphire manufacturing.
Share your drawing, CAD file, or requirements. We review feasibility and provide technical feedback.
Competitive quote with lead time. We clarify material grade, finish, tolerances, and testing.
First-article samples produced for your inspection and approval before full-run commitment.
Full-volume manufacturing to approved spec. In-process QC at every stage.
Final inspection with dimensional and optical reports. Worldwide shipping from Hong Kong.
We aim to build long-term relationships with our customers. We work with you to develop solutions to your unique problems and always strive to offer exceptional value.
Every order is tailored to your drawings. We accept non-standard sizes, orientations, and geometries that off-the-shelf suppliers cannot.
Deep crystal-growth and optics knowledge enables us to advise on orientation selection, finish requirements, and cost-optimisation.
Fast turnaround on first-article samples so you can validate fit and function before committing to full production quantities.
Ideally positioned for efficient logistics to Asia-Pacific, Europe, and the Americas with competitive shipping lead times.
We invest in understanding your product roadmap, ensuring supply continuity and proactive support as your needs evolve.
Founded in 2012, Sapphire World is a Hong Kong-based specialist in synthetic crystal materials. Over more than a decade we have served customers across Asia, Europe, and the Americas β supplying custom sapphire ingots, optical components, and precision-machined crystal parts to manufacturers and research institutions worldwide.
Our company is built on the belief that every customer deserves a responsive, technically capable partner who can solve problems β not just fulfil standard orders.
Customised crystal products for electronics, optics, defence, medical, and research applications, with deep knowledge of crystal growth, orientation, and finishing.
We aim to build long-term relationships with our suppliers and customers, working together to develop solutions to their special needs.
We offer good value and always find a solution to our customers' challenges β no matter how unusual the requirement.
Sapphire World Co., Ltd.
Level 16, The Hong Kong Club Building
3A Chater Road, Central
Hong Kong
Whether you have a detailed drawing ready or just an idea, we're happy to discuss your sapphire requirements. We respond to all enquiries within one business day.