http://www.bloomberg.com/news/2011-...diamonds-outpacing-gold-chart-of-the-day.html
Polished diamonds, beating gold this year, remain “grossly undervalued” relative to uncut gems and will extend gains on booming demand in India and China, WWW International Diamond Consultants Ltd. said.
While rough prices advanced to a record this year, polished gems are below their 1979 all-time high, polishedprices.com data show. Cut stones have risen above levels reached in 2008 before a slump in demand spurred by the global financial crisis.