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 (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) - Crystal Opal, 13x9x2,6mm, 1,94ct
Natural precious opal from Australia (Lightning Ridge) - Crystal Opal, 15x11x4mm, 3,88ct
Natural precious opal from Australia (Lightning Ridge) - Black Opal, 36,6x17,4x4,5mm, 16,51ct
Natural precious opal from Australia (Lightning Ridge) - Crystal Opal, 19x14x3,4mm, 5,69ct
Natural precious opal from Australia (Lightning Ridge) - Black Opal, 18,5x15,9x3,4mm, 6ct
Precious opal from Australia - Coober Pedy - 4 pcs, 5,9x5,9x1,6mm, 5,7x5,8x1,8mm, 5,9x5,9x1,7mm, 5,7x5,8x1,7mm, 1,43ct total
Precious opal from Australia - Coober Pedy - 7,9x7,9x2,5mm, 0,93ct
Natural precious opal from Australia (Lightning Ridge) - Natural rough opal, 25ct, 32x22mm
Natural precious opal from Australia (Lightning Ridge) - Black Opal, 17,5x9,7x2,5mm, 2,64ct
Natural precious opal from Australia (Lightning Ridge) - 17,1x11,3x2,1mm, 2,47ct
Natural precious opal from Australia (Lightning Ridge) - 16,9x7,9x3,1mm, 2,19ct
Natural precious opal from Australia (Lightning Ridge) - semi-black opal, 12x8x3,2mm, 1,76ct
Natural precious opal from Australia (Lightning Ridge) - 23,2x12,1x3,2mm, 4,05ct
Natural precious opal from Australia (Coober Pedy) - 11,9x7,1x2,1mm, 6,2x4,2x1,9mm, 1,39ct
Natural precious opal from Australia (Coober Pedy) - 12x8,1x2,1mm, 6,9x5x1,9mm, 1,49ct
Natural precious opal from Australia (Lightning Ridge) - 15x8,4x2,5mm, 2,27ct
Natural precious opal from Australia (Lightning Ridge) - semi-black opal, 13,7x11,2x2,6mm, 2,61ct
Natural precious opal from Australia (Lightning Ridge) - black opal, 18,2x9x4,6mm, 4,78ct
Natural precious opal from Australia (Lightning Ridge) - 11,4x9,7x2,4mm, 1,78ct
Natural precious opal from Australia (Lightning Ridge) - 18,1x10,2x6mm, 7,2ct
Natural precious opal from Australia (Lightning Ridge) - 13,7x12,1x3,9mm, 3,76ct
Natural precious opal from Australia (Lightning Ridge) - 17,6x11,2x3,3mm, 3,87ct
Precious opal from Ethiopia - Wello - 12,5x8,3x6mm,...