The surrounding area of Pailin City was rich in a variety of gemstones which were mined almost clean to support the Khmer Rouge. They also logged the area to create personal wealth with no regard for the effect on the environment. Nowadays all you can find is low-quality, cheap, hand-faceted gemstones at the market in Pailin downtown.
After the exploitation of the natural resources available, the Khmer Rouge invested their money in the Casinos around Pailin. Pailin is located in the most heavily mined area in the world, so especially unaware travellers are cautioned to stay only on marked roads.
Citizens of Pailin will accept Baht, Riels and US dollars, though US dollars are preferred.