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Traditional diamond mining in Banjarbaru, Indonesia. The miners destroy soil structure by using high pressure water jet. Then, the mud, sand, and any stone therein are pumped up to a manual sifter. There, other miner team will examine all stones and select the raw stone which has high value, like gemstone, crystal, and diamond (Photo: Kurniawan (2014), in Flickr)

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Diamond miner

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