Oil prices have hit a new 11-year low, adding weight to calls for more cuts in the Reserve Bank's official cash rate.

Oil prices rose on the last day of the year but fell as much as 35 per cent for 2015 after a race to pump by Middle East crude producers.

Figuring out a price tag for some of the world's biggest and rarest diamonds can be as difficult as finding them.

Maui natural gas pipeline has been sold to First State Investments.

The petrol pump war has moved up a gear with Z petrol stations entering the fray and slashing prices.

Kiwis planning to fill up their petrol tanks for summer road trips can save up to 20 cents a litre off their fuel today.

As the Prime Minister said, "It makes no sense to be calling for emissions restrictions on one hand while subsidising emissions on the other."

The 46 countries that have at least one sovereign wealth fund have largely set them up for a rainy day.

The Auckland Council intends to hold a debate and a vote on whether to oppose exploratory oil drilling in an area of seabed off the west coast.

Be fearful when others are greedy and greedy when others are fearful - so goes the advice of investment sage Warren Buffett.

Oceana Gold is predicted to boost gold production 30 per cent to 40 per cent by 2017.

At Bergen harbour, there's a forlorn look about the oil service ships tied up bow to stern.

Mobil is taking its $10m tank farm pollution fight all the way to the Supreme Court.

Partially completed buildings stand during construction this month at the Williston Apartments luxury development in Williston, North Dakota.

High levels of pollution are being emitted by diesel vehicles built by a range of carmakers other than Volkswagen, it has been reported.

Coalminer Bathurst Resources has posted a net loss of $16.4 million after tax for the year to June 30, 2015, compared to $189.9 million the previous year.

Russia's energy pivot toward Asia faces its sternest test next month when Vladimir Putin visits Beijing amid slumping oil prices and concerns over China's economic slowdown.

Publicly-owned Waterfront Auckland has won $10m from oil giant Mobil to pay for a cleanup of part of the Wynyard Quarter.

New Zealand Oil & Gas says exploration drilling of the Barque prospect in the Canterbury Basin, which has the potential to be the nation's biggest-ever hydrocarbon discovery, is expected to start in 2017.

A collapse in iron ore and coal prices has exposed Australia's true vulnerability.

Iran, once OPEC's second-biggest producer, will boost its oil exports by 500,000 barrels a day immediately after sanctions are lifted

Up to 60 mining jobs have been promised with the start up of two new goldmining operations near Hokitika and Kumara.

Never mind cutting output to staunch a global glut - the talk so far is mostly about pumping more oil.

NZ's largest and longest-producing offshore oil and gas field, Maui, has gained marine resource consents allowing it to operate for up to 35 years more,

The massive rally in Z Energy shares, sparked by the firm's plans to acquire a rival, should raise competition concerns for the Commerce Commission, says a market source.

The annual BRW Rich List has published, showing Australia's 200 richest citizens ...

Wool auction volumes are set to increase next week as farmers who have been holding out put their bales on the market.