The challenge:
Crystal growth without compromise
Sapphire production requires alumina of the highest chemical purity and consistency. Contaminants at the ppm level can lead to lattice defects, thermal stress fractures, and lower optical performance. In a process this sensitive, premium materials aren’t optional—they’re essential.
How we help:
Designed for clean growth
CRYSTALGuard™ is the highest-purity alumina for sapphire growth. Produced with lean, high-yield methods, it eliminates the trace contaminants that legacy producers struggle to control. With 5N purity, tight particle size distribution, and full traceability, CRYSTALGuard™ delivers the reliability that next-generation optics, wear-resistant components, and LED systems demand.
High purity, proven reliability
CRYSTALGuard™ delivers 99.999% Al₂O₃ purity, and is manufactured using ISO9001:2015 certified processes. It’s trusted for applications where consistency, clarity, and structural integrity are non-negotiable.
Efficient process, lower impact
Our proprietary manufacturing method minimizes waste, energy, and emissions compared to conventional alumina processes, delivering sustainability benefits without compromising performance.
CRYSTALGuard™ Performance Highlights
| Purity | Up to 99.999% Al₂O₃ |
| Formats | Beads, Pellets |
| Applications | Sapphire growth, sapphire substrates for optics and electronics |
The processes we protect
CRYSTALGuard™ supports high-purity performance across sapphire growth and downstream applications where optical quality, thermal resistance, and structural precision matter.
Sapphire Growth
Supports Czochralski, Kyropoulos, and other crystal growth methods for LED, optical, and scratch-resistant applications.
Optics & Electronics
Used in sapphire substrates for wear-resistant lenses, displays, and high-voltage electronics.
Explore other PolarGuard™ categories
Choose the product family that matches your application and format needs.
High-purity alumina for CMP, ALD, and advanced semiconductor processes.
Tailored alumina for coatings, medical, and aerospace applications.
High-purity alumina for CMP, ALD, and advanced semiconductor processes.