Juergen Freund / Andamooka opals held in hand, South Australia, June 2011
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TJ Rich / Gemstone mine in paddyfield, Ratnapura, Sri Lanka, December 2012.
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TJ Rich / Gemstone dealers, China Fort, Beruwela, Sri Lanka, December 2012.
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TJ Rich / Drainage system for gemstone mine shafts under paddy fields, Ratnapura, Sri Lanka, December 2012.
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TJ Rich / Gemstone miner preparing to descend mine shaft with only candles for light and no safety equipment. Ratnapura, Sri Lanka, December 2012.
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TJ Rich / Gemstone miner holding bowl of tea, Ratnapura, Sri Lanka, December 2012.
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Juergen Freund / Andamooka opal field with a deep open pit, South Australia
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Graham Eaton / Pebbles of semi-precious Jasper, Quartz SiO2, in shingle on a beach, Aberdaron, Wales. The jasper is present in the rocks associated with an ancient plate boundary. July
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Albert Lleal / Emeralds in rock, Belgium
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John Cancalosi / Aquamarine, gemstone variety of the mineral Beryl (beryllium aluminum silicate), precious stone, Pakistan
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John Cancalosi / Azurite (copper carbonate), a minor ore of copper and used as gemstone and ornaments. Sample from Malbunka Copper Mine, Areyonga, Northern Territory, Australia.
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John Cancalosi / Kunzite, ore of lithium. It is a pink to light purple variety of the mineral spodumene. Discovered in 1902 and named after geologist George F. King. Only popular as a gemstone since the 1990s, Used as...
