Each company has tied up for different quantity and different quality of diamonds.
Don't expect the synthetic stones to surpass natural ones anytime soon because the world's biggest miners of diamonds aren't looking to get into man-made diamonds.
India's direct import of roughs was $767 million from Russia in 2013, a little less than five per cent of India's total import of roughs.
The economic downturn in the world's jewellery markets has checked the growth of India's diamond export industry, cutting the workforce by as much as 25 per cent and forcing one of the country's most promising export sectors to seek government help.
A man jumped on stage and shot four people dead before he was killed by a policeman.
India Inc raised various issues to increase trade flows in sectors like pharmaceuticals, banking, energy and infrastructure
Deals will cover oil exploration and supply, infrastructure and an increase in direct diamond sales to India
Rajesh Bhayani examines what SEBI's approval of diamond futures trading means for the diamond market players.
A sightholder is a company on the Diamond Trading Company's list of authorised bulk purchasers of rough diamonds.
India's long-held position as the world's top diamond polisher is being challenged by soaring output from China.
Trade sanctions on Russia by Europe and the US offer an opportunity for India, but the devaluation of the rouble may play spoilsport