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) 15,2x8,2x2,7mm, 1,75ct
Natural precious opal from Australia (Lightning Ridge) 20,3x8,5x2,3mm, 2,43ct
Natural precious opal from Australia (Lightning Ridge) 14x8,6x3mm, 2,43ct
Natural precious opal from Australia (Lightning Ridge) 8,5x7,2x2,8mm, 1,24ct
Natural precious opal from Australia (Lightning Ridge) 15x12,8x2mm, 2,33ct
Natural precious opal from Australia (Lightning Ridge) 15,8x7,1x2,9mm, 2,49ct
Natural precious opal from Australia (Lightning Ridge) 14,7x9,3x2,4mm, 2,44ct
Natural precious opal from Australia (Lightning Ridge) 11,5x7,8x1,9mm, 1,12ct
Natural precious opal from Australia (Lightning Ridge) 13,4x10x3mm, 5,58ct
Natural precious opal from Australia (Lightning Ridge) 18,6x16,7x3,2mm, 6,3ct
Natural precious opal from Australia (Lightning Ridge) 28x16x6mm, 23ct
Natural precious opal from Australia (Lightning Ridge) 13,2x10x4mm, 3,4ct
Natural precious opal from Australia (Lightning Ridge) 19x18x3,5mm, 8,8ct
Natural precious opal from Australia (Lightning Ridge) 27,5x12,8x4,4mm, 7,8ct
Natural precious opal from Australia (Lightning Ridge) 28x14,7x3,7mm, 9,2ct
Natural precious opal from Australia (Lightning Ridge) 32x23x7mm, 42ct
Natural precious opal from Australia (Lightning Ridge) 38x28x5mm
Natural precious opal from Australia (Lightning Ridge) 31x22x6,2mm, 21,6ct
Natural precious opal from Australia (Lightning Ridge) 40,3x32x6,3mm
Natural precious opal from Australia (Lightning Ridge) 11x7,2x3,2mm, 1,6ct
Natural precious opal from Australia (Lightning Ridge) 19x17x4,6mm, 14ct
Natural precious opal from Australia (Lightning Ridge) 20,7x16,4x6,9mm, 26,5ct
Natural opal from Australia (Lightning Ridge) 20,6x16,9x6,6mm, 14ct
Natural precious opal from Australia (Lightning Ridge) 12,5x7,6x3,4mm, 1,84ct
Natural precious opal from Australia (Lightning Ridge) 16,6x11,7x5mm, 5ct
Natural precious opal from Australia (Lightning Ridge) 16,9x11x2,4mm, 2,57ct
Natural precious opal from Australia (Lightning Ridge) 8,5x5x2,2mm, 0,51ct
Natural precious opal from Australia (Lightning Ridge) 9,7x6x2,6mm, 0,8ct
Natural precious opal from Australia (Lightning Ridge) 7,8x6,5x3mm, 0,93ct
Natural precious opal from Australia (Lightning Ridge) 15x7x2mm, 1,3ct
Natural precious opal from Australia (Lightning Ridge) 14,6x5x2,8mm, 1,25ct
Natural precious opal from Australia (Lightning Ridge) 9,9x7x4mm, 1,41ct