Bismuth kristal groot €14,50 |
Bismuth kristal klein €4,50 |
Bismuth kristal middel €8,50 |
Silicium carbide klein €0,95 |
Silicium carbide middel €1,50 |
Silicium groot €3,50 |
Silicium klein €1,50 |
Silicium middel €2,50 |