A large number of silicon dioxide (SiO2) contained crystal stones are burned continuously at a constant temperature of 1650 °C for 8 hours. This fine watches sky-dewller process makes the silicon to vaporise and then a high technology approach is used to  collect the silicon essence. Meanwhile, the impurity materials are removed and the essence of silicon is extracted. Such silica can be dissolved in water and this is the concentrated water-soluble silica solution which can be drunk through the liquid form.