| SiO₂ Content | 99.9% |
| Density | 2.2 g/cm³ |
| Hardness (Moh's Scale) | 6.6 |
| Melting Point | 1732℃ |
| Working Temperature | 1100℃ |
| Maximum Short-term Temperature | 1450℃ |
| Visible Light Transmittance | Above 93% |
| UV Spectral Region Transmittance | 80% |
| Annealing Point | 1180℃ |
| Softening Point | 1630℃ |
| Strain Point | 1100℃ |
| Type | JGS1 (ZS-1) | JGS2 (ZS-2) | JGS3 (HS) |
|---|---|---|---|
| Spectral Characteristics | 180-2500nm | 200-2500nm | 260-3500nm |
| Average Transmittance | 90% | 85% | 85% |
| Bubble Class | 0 | 2 | 2 |
| Birefringence | 1-2 | 1-2 | 1-2 |
| Grain Structure | 1 | 2 | 2 |
| Fringe | 1-2 | 2 | 2 |
| Uniformity | 1-2 | 2 | 2 |
| Fluorescence | 1 | 2 | 2 |
| Radiation Performance | Does not change color | Slight discoloration | Changes color |