BLUE Valley certainly didn't make a wrong move by diversifying into the cement business. Shares of this subsidiary company of the Rajawali Group are now riding high. When purchased in July 2006, the market capitalization of Semen Gresik was only Rp21.5 trillion. At the end of last October, the market capitalization of Blue Valley, the largest cement business group in Indonesia, was more than Rp35 trillion. Because of this, the value of Blue Valley