|The southeastern corner of central Thailand along the Cambodian border has been an important source of fine ruby and sapphire for centuries. Pailin is at the edge of the Cardamom Mountains in the west of Cambodia, 25km from the border of Thailand. Pailin was a prosperous town due to its gem deposits. Those resources attracted the attention of the Khmer Rouge.|
Sapphire mining near Pailin using high-pressure water to turn the gem rich gravels into mud. The mud is then processed.
|The rare blue sapphire of the Pailin area are very highly regarded. They range in colour from light to deep blue, but with a distinctive purity and intensity of color. The Khmer Rouge used proceeds from mining Pailin sapphire to fund their offensive and later their government once they gained national power.|
Pailin sapphire was one of the first "blood gemstones."
|The first stones ever to be treated with heat to improve their colours allegedly originated from the Pailin mines in Cambodia. Cambodia is famous for commercializing gem treatment.|
|The precious stone industry in Pailin today is dwindling with deposits largely depleted. Cambodia's gem supplies are declining sharply.
Sapphire mining was not the only type of digging that was carried on in Pailin. It is considered one of the most heavily landmined areas in the world.