Australia is located and also accounts for about 95% of all expensive opals in the world. The remaining 5% is more or less divided by about 19 state territories. In most of them expensive opals are only found and only in nine states their mining takes place. Australian expensive opals differ from precious opals found in the rest of the world mainly from their origins. While in the world, in all cases, the result of volcanic activity and hydrothermal processes, opal was formed in Australia mostly as a product of the weathering process.
Natural precious opal from Australia (Lightning Ridge) - 13,7x13,5x4mm, 4,44ct
Natural precious opal from Australia (Lightning Ridge) - 19,3x8,4x4mm, 3,98ct
Natural precious opal from Australia (Lightning Ridge) - 11,5x8,3x3,2mm, 1,81ct
Natural precious opal from Australia (Lightning Ridge) - semi-black opal, brilance 3,8, 14,9x9,2x1,9mm, 1,54ct
Natural precious opal from Australia (Lightning Ridge) - black opal, 18,3x5x4,5mm, 3,02ct
Natural precious opal from Australia (Lightning Ridge) - dark opal, 9,4x7,6x2,6mm, 1,15ct
Natural precious opal from Australia (Lightning Ridge) - black opal, 15,7x10,7x2,4mm, 2,54ct
Natural precious opal from Australia (Lightning Ridge) - dark opal, 17,6x14,3x3,1mm, 4,44ct
Natural precious opal from Australia (Lightning Ridge) - dark opal, 19,7x13x4mm, 5,68ct
Natural precious opal from Australia (Lightning Ridge) - dark opal, 16,4x13,2x3,9mm, 5,29ct
Natural precious opal from Australia (Lightning Ridge) - crystal opal, 18,8x15,9x4mm, 5,42ct
Natural unworked precious opals. Australian Opals - Crystal Opal from the Lightning Ridge area. A bottle with a plug and no water. 27x13mm
Natural precious opal from Australia (Lightning Ridge) - semi-black opal, 15,7x10,1x4mm, 3,86ct
Natural precious opal from Australia (Lightning Ridge) - semi-black opal with brilliant blue and green, the colors of high brilliance for each light, brilliance 4,7, 13,6x12,2x2,6mm, 3,51ct
Australia's Natural Dear Opal (Lightning Ridge) - brilance 4,6, 14,9x7x3mm, 1,92ct
Natural precious opal from Australia (Lightning Ridge) - black opal, black opal gorgeous with beautifully scintillating blue and purple, the colors of both sides opal, 4,3 brilliance, 19,9x12,8x5,2mm, 8,51ct
Natural precious opal from Australia (Lightning Ridge) - 15,3x8,2x2,8mm, 2,43ct
Natural precious opal from Australia (Lightning Ridge) - 12x7,4x2,8mm, 1,49ct
Natural precious opal from Australia (Lightning Ridge) - 21,7x10,2x2,6mm, 2,74ct
Natural precious opal from Australia (Lightning Ridge ) - 19,4x16,3x2,9mm, 6,24ct
Natural precious opal from Australia (Lightning Ridge) - 14,5x9,6x2,9mm, 2,69ct
Natural precious opal from Australia (Lightning Ridge) - 11,7x7,6x2,2mm, 1,32ct
Natural precious opal from Australia (Lightning Ridge) - 8,9x7,5x2,9mm, 1, 27ct
Natural precious opal from Australia (Lightning Ridge) - 5,5x5x2mm, 0,36ct
Natural precious opal from Australia (Lightning Ridge) - 7,8x4,5x2,4mm, 0,51ct
Natural precious opal from Australia (Lightning Ridge) - 13,2x10,8x3mm, 2,75ct
Natural precious opal from Australia (Lightning Ridge) - 16,5x3,9mm, 6ct
Natural precious opal from Australia (Lightning Ridge) - 8,3x5,3x2,4mm, 0,63ct
Natural precious opal from Australia (Lightning Ridge) - 8,2x5,9x2,6mm, 0,79ct
Natural precious opal from Australia (Lightning Ridge) - 9x6,6x3mm, 0,98ct
Natural precious opal from Australia (Lightning Ridge) - 8,7x3,6x2,1mm, 0,32ct
Natural precious opal from Australia (Lightning Ridge) - 15,3x6,5x3,2mm, 1,89ct
Natural precious opal from Australia (Lightning Ridge)...