An undated handout photo released by mining giant Rio Tinto on February 22, 2012 shows a 12.76 carat pink diamond -- the largest of the rare and precious stones ever found in Australia. Named the Argyle Pink Jubilee, the rough stone was found at Rio's pink diamond operations in the Kimberley region of western Australia and would take 10 days to cut and polish in Perth. TOPSHOTS --- EDITORS NOTE --- RESTRICTED TO EDITORIAL USE MANDATORY CREDIT NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS AFP PHOTO / HO / RIO TINTO (Photo credit should read RIO TINTO/AFP/Getty Images)