Sotheby’s expects at least $19m for this rare blue diamond The rock, about the size of a shirt button, is the largest fancy vivid blue diamond ever graded by a laboratory. Cecilia Jamasmie | August 20, 2013 | 6:41 pm
Giant miners hit 30-year lows Mining stocks took a dip on Tuesday, as major companies such as Glencore Xstrata and BHP Billiton reported losses and massive writedowns. Cecilia Jamasmie | August 20, 2013 | 4:07 pm
AngloGold struggling to keep flagship mine in Ghana open — report New CEO, Srinivasan Venkatakrishnan, said operations are unsustainable. Cecilia Jamasmie | August 20, 2013 | 1:36 pm
BHP goes for it: $2.6bn in Canada’s Jansen potash project Today's announcement takes BHP’s total commitment to Jansen to about $3.8 billion. Cecilia Jamasmie | August 20, 2013 | 10:26 am
Fracking blamed for massive wave of earthquakes in Ohio The state registered over 100 earthquakes in less than a year. Study links them to fracking. Cecilia Jamasmie | August 20, 2013 | 10:13 am
Family of heiress Huguette Clark ready to divide up her $300m copper wealth Copper millionaire Clark lived a reclusive life and her activities were virtually unknown to the public. Cecilia Jamasmie | August 16, 2013 | 6:52 pm
BHP Billiton faces US corruption probe Related mainly to its sponsorship of the Beijing Olympics in 2008. Cecilia Jamasmie | August 16, 2013 | 4:47 pm
South Africa remembers those dead at Marikana mine Sticks and umbrellas replaced machetes and spears. Cecilia Jamasmie | August 16, 2013 | 4:02 pm
Forget graphene and diamonds: scientists find new supermaterial Carbyne is also around twice as stiff as the stiffest known materials. Cecilia Jamasmie | August 16, 2013 | 2:46 pm
Anglo American kicks off expansion of coal mine in Canada Project will extend Trend coal mine's life by 16 years. Cecilia Jamasmie | August 16, 2013 | 2:11 pm