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) - 7,6x4,3x2mm, 0,37ct
Natural precious opal from Australia (Lightning Ridge) - 5,2x3,3x2,3mm, 0,21ct
Natural precious opal from Australia (Lightning Ridge) - 19,3x10,4x4,7mm, 5,39ct
Natural precious opal from Australia (Lightning Ridge) - 8x5,8x3,4mm, 0,87ct
Natural precious opal from Australia (Lightning Ridge) - 24x9,6x2,6mm, 2,98ct
Natural precious opal from Australia (Lightning Ridge) - 12,6x9,2x5mm, 3,31ct
Natural precious opal from Australia (Lightning Ridge) - 19x13,8x2,3mm, 3,43ct
Natural precious opal from Australia (Queensland) - Boulder Opal 14,8x10,7x3,9mm, 5ct
Natural precious opal from Australia (Lightning Ridge) 13,6x9,8x3mm, 2,47ct
Natural precious opal from Australia (Lightning Ridge) 9,3x6,9x3mm, 1,21ct
Natural precious opal from Australia (Lightning Ridge) 7,4x5,7x1,5mm, 0,36ct
Natural precious opal from Australia (Lightning Ridge) - 22,4x13,1x2mm, 3,95ct
Natural precious opal from Australia (Queensland) - Boulder Opal 30x14,4x4,5mm, 14,35ct
Natural precious opal from Australia (Lightning Ridge) Crystal 9,5x5,1x3,1mm
Natural precious opal from Australia (Lightning Ridge) Dark opal N5, brillance 3,5, 14,6x11,4x3,6mm, 3,51ct
Natural precious opal from Australia (Lightning Ridge) 20,2x8,4x2,8mm, 3,06ct
Natural precious opal from Australia (Coober Pedy) Crystal opal N7, brillance 4, 12,8x7x2,1mm, 1,27ct
Natural precious opal from Australia (Coober Pedy) Crystal opal N7, brillance 4,2, 12,5x8,7x2mm, 1,34ct
Natural precious opal from Australia (Lightning Ridge) Dark opal N6, brillance 4,3, 8,5x5x3,2mm, 0,96ct
Natural precious opal from Australia (Lightning Ridge) 36,1x22,5x5-2mm, 20,77ct
Natural precious opal from Australia (Lightning Ridge) 15,7x7,3x5,1mm, 3,74ct
Natural precious opal from Australia (Lightning Ridge) - 23,6x15,3x3,4mm, 7,17ct
Natural precious opal from Australia (Queensland) - Boulder Yowah Opal 27,4x25,9x3,2mm, 31,4ct
Natural precious opal from Australia (Lightning Ridge) - 15,4x10,5x2,6mm, 2,86ct
Natural precious opal from Australia (Queensland) - Boulder Matrix Opal 12x6,5x3mm, 1,91ct
Natural precious opal from Australia (Lightning Ridge) - 8,9x7,7x3,4mm, 1,74ct
Natural precious opal from Australia (Lightning Ridge) - 7x6,3x1,6mm, 0,45ct
Natural precious opal from Australia (Lightning Ridge) - 26,9x8x5,6mm, 7,41ct
Natural precious opal from Australia (Lightning Ridge) - Black Opal, 20,7x12x4,5mm, 6,72ct
Natural precious opal from Australia (Lightning Ridge) - Crystal Opal, 37,7x10x3,8mm, 8,98ct
Natural precious opal from Australia (Lightning Ridge) - Crystal Opal, 20x7,8x2,6mm, 2,77ct
Natural precious opal from Australia (Lightning Ridge)...