According to 'Manasara Pratima lakshana' there are eight kinds of things in which sculpture can be made. Shaiee, Darumayee, Lohi, Lepya, Lekhanu Saikathee, Manomayee, Maniyee Prathima and Astha vidhaha smruthaha. 1. Stone 2. Wood 3. Metal 4. Lepya (mixture of Adhesives) 5. Etching 6. Sand 7. Manomayee (This is considered to be the greatest of all. This is imagination of god in the mind and performing rituals and 8. Using gem stones as symbolism.
To know about the sculpture, Sanskrit Language is essential. Because entire Shilpa Shastra is described in Sanskrit. Ofcourse the most of the Shastras have been translated in almost all Indian languages and in English also. Anyhow knowledge in Sanskrit give more benefits to understand well.