Illegal miners try their luck in Mozambique ruby rush In northern Mozambique, informal -- and illegal -- ruby mining is a tough business that has attracted thousands of itinerant workers despite strenuous crackdowns by police and private guards. Mozambique now accounts for 80 percent of global ruby production -- but the illegal mining is a far cry from the giant mining companies and the chic auction houses in Singapore where millions of dollars of gems are sold. IMAGES AND SOUNDBITES