Leading diamond jewellery brand Cygnus has launched a promotional drive for the forthcoming Raksha-bandhan festival in India, slated for 5 August 2009. Consumers can gain an opportunity of wining upto 50 percent discount on the Cygnus jewellery. %% All jewellery pieces at Cygnus are crafted in 18k gold. The brand offers a portfolio of rings, pendants, earrings, nose pins, sets, bracelets, neck wear and bangles. %% At present there are 20 exclusive Cygnus showrooms and 200 outlets in the country.