- Rough premiums rise as market sentiment improves. Polished trading advancing on steady Far East and U.S. demand. India's polished trade slumps in Feb. with exports -54% to $1.4B, imports -80% to $476M, rough imports +21% to $1.3B. Indian domestic market cautious as jewelers strike against tax hike on precious metals imports. U.S. retail demand stable: Tiffany & Co.'s 4Q revenue +8% to $1.2B, net earnings -2% to $178M. Signet Jewelers 4Q revenue +7% to $1.4B, net income +49% to $157M. Gem Diamonds 2011 revenue +49% to $396M, net profit +235% to $68M. Blue Nile appoints Harvey Kanter as president and CEO. EU extends sanctions on Zimbabwe’s Marange diamonds to February 2013