Mining giant Rio Tinto recorded 3 percent (on y-o-y basis) increase in its diamond production the second quarter of 2012. The said production stood at 2.808 million ‎carats.

The company’s Argyle mine in Australia was believed to be the major contributing factor in the increased diamond production. Production at the Argyle mine rose 6 percent to 1.677 million carats, as the mine achieved higher grade ore, reports say.