Diamond
Media playback is unsupported on your device
Video

Diamond polishers lose their sparkle

An estimated eight out of 10 of the world's diamonds have been cut and polished in Surat in the north-west Indian state of Gujarat.

Yogita Limaye visits the town - where security seems non-existent - and hears how businesses are worrying over the threat from China and volatile currency.

Watch India Business Report

Go to next video: University's diamond technology aims