GR Infraprojects made a stellar debut on the bourses as the market value of its equity shares more-than-doubled or rose 103 per cent to list at Rs 1,700 on the BSE in Monday's session against its issue price of Rs 837 per share. Clean Science and Technology made a robust debut on the bourses on Monday as its shares listed at Rs 1,784 on the BSE, a 98 per cent premium against the issue price of Rs 900 per share.