The tribe is also currently talking to the mining community and developing agreements with Minerals West Coast and the West Coast Commercial Gold Miners' Association to address what happens to pounamu which is regularly unearthed during mining in the Hokitika district.
Miners are being asked to stockpile it, so it can be returned to Ngai Tahu.
The law preventing the export of raw pounamu was introduced in 1947.
It does not apply to small pieces of jewellery, or rocks less than 5kg. However, pieces more than 50 years old are controlled.
Two years ago, police raided two Hokitika jade shops and seized
millions of dollars of stolen South Westland pounamu. A court subsequently ordered its return to Ngai Tahu.
In 2010, Trade Me took down listings of 'snowflake' pounamu after being warned that the trade was illegal.
In the past two years Customs have made nine interceptions for pounamu weighing almost 300kg in total.