manufactured sand

Whom to contact for the supplier of M - Sand? ..
 I'm looking for artificial sand to construct my home. Builders are have lack of knowledge on artificial sand. Can you guide me how to get artificial sand and the cost. If already builder using, give those contacts so I can reach them to get an idea
Check with
 Robo Silicon Pvt LtdH No.1113, 2nd Floor
Near All India Radio
Trichy Road,
Ramanathapuram
Coimbatore – 641045
Tel: 0422 – 6477066
Cell: 9845082797
Bangalore phone:Tel: 080 – 65331998