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Black opal (Black and Dark opal or semi-black) - the color of the base material is black, semi-black, dark gray to light gray. Coloring is due to the presence of carbonaceous substances in the molecular structure. It features a number of beautifully opalescent rich colors highlighted with black or dark backgrounds. It is always accompanied by a general opal, the so-called "dots" (the same color as the base mass). black opal is found in layers of clay.
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Precious Opal - Australia - 18x10mm Precious Opal - Australia - 18x10mm
18 250 KčIn StockNatural precious opal from Australia (Lightning Ridge) - Black Opal, 17,5x9,7x2,5mm, 2,64ct
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Precious Opal - Australia - 17x11mm Precious Opal - Australia - 17x11mm
5 260 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 17,1x11,3x2,1mm, 2,47ct
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Precious Opal - Australia - 22x16mm Precious Opal - Australia - 22x16mm
4 460 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 22x15,7x3,7mm, 7ct
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Precious Opal - Australia - 12x8mm Precious Opal - Australia - 12x8mm
2 090 KčIn StockNatural precious opal from Australia (Lightning Ridge) - semi-black opal N5, brillance 4,3, 12x8x3,2mm, 1,76ct
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Precious Opal - Australia - 14x6mm Precious Opal - Australia - 14x6mm
1 890 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 13,9x6x3,2mm, 1,55ct
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Precious Opal - Australia - 12x11mm Precious Opal - Australia - 12x11mm
2 390 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 11,5x10,7x3mm, 2,58ct
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Precious Opal - Australia - 14x8mm Precious Opal - Australia - 14x8mm
1 790 KčOut of stockNatural precious opal from Australia (Lightning Ridge) - 13,7x8,3x2,6mm, 2,09ct
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Precious Opal - Australia - 23x12mm Precious Opal - Australia - 23x12mm
2 240 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 23,2x12,1x3,2mm, 4,05ct
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Precious Opal - Australia - 10x9mm Precious Opal - Australia - 10x9mm
1 860 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 9,6x8,6x2,7mm, 1,37ct
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Precious Opal - Australia - 13x10mm Precious Opal - Australia - 13x10mm
3 190 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 12,6x9,5x3,9mm, 2,79ct
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Precious Opal - Australia - 15x6mm Precious Opal - Australia - 15x6mm
1 270 KčOut of stockNatural precious opal from Australia (Lightning Ridge) - 14,5x6x3,2mm, 1,98ct
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Precious Opal - Australia - Flagstone 13x7mm Precious Opal - Australia -...
1 340 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 13,3x6,8x2,5mm, 1,52ct
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Precious Opal - Australia - Pinfire 16x14mm Precious Opal - Australia - Pinfire...
1 490 KčOut of stockNatural precious opal from Australia (Lightning Ridge) - 15,7x14,4x2,8mm, 3,81ct
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Precious Opal - Australia 26x10mm Precious Opal - Australia 26x10mm
5 680 KčIn StockNatural precious opal from Australia (Mintabie) - semi-black opal, 26,3x10x2,6mm, 26,2x9,8x2,8mm, 10,24ct
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Precious Opal - Australia 10x9mm Precious Opal - Australia 10x9mm
4 540 KčIn StockNatural precious opal from Australia (Coober Pedy) - 11,9x7,1x2,1mm, 6,2x4,2x1,9mm, 1,39ct
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Precious Opal - Australia 12x7mm, 6x4mm Precious Opal - Australia 12x7mm, 6x4mm
4 870 KčOut of stockNatural precious opal from Australia (Coober Pedy) - 12x8,1x2,1mm, 6,9x5x1,9mm, 1,49ct
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Precious Opal - Australia 12x8mm Precious Opal - Australia 12x8mm
2 840 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 12,2x8x3,9mm, 2,13ct
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Precious Opal - Australia 15x8mm Precious Opal - Australia 15x8mm
2 190 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 15x8,4x2,5mm, 2,27ct
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Precious Opal - Australia - 3pcs - 16,6ct Precious Opal - Australia - 3pcs -...
1 790 KčOut of stockNatural precious opal from Australia (Lightning Ridge) - 21,3x11,6x4,7mm, 19,9x13,2x4,3mm, 15,9x6,7x4,1mm, 16,6ct
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Precious Opal - Australia 7x7mm Precious Opal - Australia 7x7mm
480 KčOut of stockNatural precious opal from Australia (Lightning Ridge) - 7x6,6x2,5mm, 0,57ct
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Precious Opal - Australia 14x11mm Precious Opal - Australia 14x11mm
1 680 KčIn StockNatural precious opal from Australia (Lightning Ridge) - semi-black opal, 13,7x11,2x2,6mm, 2,61ct
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Precious Opal - Australia 18x9mm Precious Opal - Australia 18x9mm
2 760 KčIn StockNatural precious opal from Australia (Lightning Ridge) - black opal, 18,2x9x4,6mm, 4,78ct
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Precious Opal - Australia 20x6mm Precious Opal - Australia 20x6mm
1 630 KčOut of stockNatural precious opal from Australia (Lightning Ridge) - black opal, 11,5x8,5x2,5, 1,67ct
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Precious Opal - Australia 11x10mm Precious Opal - Australia 11x10mm
5 460 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 11,4x9,7x2,4mm, 1,78ct
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Precious Opal - Australia 18x10mm Precious Opal - Australia 18x10mm
4 230 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 18,1x10,2x6mm, 7,2ct
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Precious Opal - Australia 14x12mm Precious Opal - Australia 14x12mm
3 850 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 13,7x12,1x3,9mm, 3,76ct
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Precious Opal - Australia 18x11mm Precious Opal - Australia 18x11mm
1 980 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 17,6x11,2x3,3mm, 3,87ct
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Precious Opal - Australia 19x8mm Precious Opal - Australia 19x8mm
3 270 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 19,3x8,4x4mm, 3,98ct
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Precious Opal - Australia 12x8mm Precious Opal - Australia 12x8mm
990 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 11,5x8,3x3,2mm, 1,81ct
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Precious Opal - Australia 11x8mm Precious Opal - Australia 11x8mm
1 560 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 11,3x7,9x2,9mm, 1,59ct
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Precious Opal - Australia 16x14mm Precious Opal - Australia 16x14mm
1 480 KčOut of stockNatural precious opal from Australia (Mintabie) - dark opal, 16,4x14,3x2,2mm, 3,82ct
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Precious Opal - Australia 15x9mm Precious Opal - Australia 15x9mm
1 560 KčIn StockNatural precious opal from Australia (Lightning Ridge) - semi-black opal, brilance 3,8, 14,9x9,2x1,9mm, 1,54ct
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Precious Opal - Australia 18x5mm Precious Opal - Australia 18x5mm
1 460 KčIn StockNatural precious opal from Australia (Lightning Ridge) - black opal, 18,3x5x4,5mm, 3,02ct
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Precious Opal - Australia 12x6mm Precious Opal - Australia 12x6mm
540 KčOut of stockNatural precious opal from Australia (Lightning Ridge) - black opal with blue color, 12,3x6,3x5,5mm, 2,82ct
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Precious Opal - Australia 16x14mm Precious Opal - Australia 16x14mm
420 KčOut of stockNatural precious opal from Australia (Mintabie) - dark opal, 16,4x14,3x2,2mm, 3,82ct
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Precious Opal - Australia 10x7mm Precious Opal - Australia 10x7mm
1 290 KčOut of stockNatural precious opal from Australia (Lightning Ridge) - black opal, 9,9x7,4x3mm, 1,42ct
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Precious Opal - Australia 12x7mm, 6x4mm Precious Opal - Australia 12x7mm, 6x4mm
5 440 KčOut of stockNatural precious opal from Australia (Coober Pedy) - 11,9x8x2,4mm, 7,1x5,1x2mm, 1,66ct
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Precious Opal - Australia 12x7mm, 6x4mm Precious Opal - Australia 12x7mm, 6x4mm
5 340 KčOut of stockNatural precious opal from Australia (Coober Pedy) - 12,2x7,1x2,8mm, 6,1x4,1x1,9mm, 1,62ct
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Precious Opal - Australia 10x9mm Precious Opal - Australia 10x9mm
1 170 KčOut of stockNatural precious opal from Australia (Lightning Ridge) - dark opal, 10x8,6x5,1mm, 2,07ct
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Precious Opal - Australia 9x8mm Precious Opal - Australia 9x8mm
1 850 KčIn StockNatural precious opal from Australia (Lightning Ridge) - dark opal, 9,4x7,6x2,6mm, 1,15ct
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