Jade A Global Witness investigation into Myanmar's "Big State Secret"

The most valuable jade in the world is found in the Kachin hills of northern Myanmar. This 12 month investigation reveals it is worth far more than previously thought - up to US$31 billion in 2014 alone. That is equivalent to nearly half the GDP of the whole country, which badly needs it. But hardly any of the money is reaching ordinary people or state coffers.