It was shown that pure and amorphous silica with a high specific surface area can be obtained from rice husks. There was a problem for the quality of the rice husk silica. It was the tendency to form agglomerates. By a suitable sample preparation route, a size reduction could be achieved. A silica specimen that was obtained by burning the rice husks at 600°C after leaching of this raw material in HCl, presented a homogeneous particle size distribution compared to the other sample preparation techniques. The product with small particle size and high specific surface area can be use with different aims, for instance, an absorbent or catalyst support.