Calcium silicate ceramics have been made using natural ingredients such as rice husk and snail shell with solid reaction techniques. The aim of this study to determine the characteristics of calcium silicate that have been sintered at atemperature of 900 °C, 1000 °C, and 1100 °C. Samples were characterized by X-Ray Diffraction (XRD), optical microscopy, and Fourier Transform Infra-Red (FTIR). The XRD results showed that CaSiO3(calcium silicate) along with the increase in calcinationtemperature and quantity wasincreased due to the increaseof temperature ofcalcination. FTIR analysis showed that the Ca-Si-O bond was formed at wave number ranging from 848 cm-1and 999 –1001cm-1.Keywords:Calcium silicate;rice husk ash;the shell of a snail.