| Condition | Single diffusion |
| Density of sodium meta silicate | 1.03 |
| pH of gel | 4.5 |
| Concentration of CdCl2 | 1 M |
| Gel setting period | 6 days |
| Gel aging | 48 hours |
| Period of growth | 20 days |
| Temperature | 28˚C |
| Quality | Transparent |
| Size | 0.30 × 0.25 × 0.20 mm3 |