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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 - 12x10mm Precious Opal - Australia - 12x10mm
15 640 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 11,6x10,4x1,5mm, 1,38ct
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Precious Opal - Australia - 15x11mm Precious Opal - Australia - 15x11mm
590 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 14,6x10,7x3,1mm, 2,91ct
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Precious Opal - Australia - 9x8mm Precious Opal - Australia - 9x8mm
930 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 8,9x7,7x3,4mm, 1,74ct
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Precious Opal - Australia - 10x6mm Precious Opal - Australia - 10x6mm
820 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 9,9x6,1x1,8mm, 0,82ct
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Precious Opal - Australia - 8x5mm Precious Opal - Australia - 8x5mm
490 KčOut of stockNatural precious opal from Australia (Lightning Ridge) - 10,2x7,5x2,3mm, 1ct
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Precious Opal - Australia - 10x8mm Precious Opal - Australia - 10x8mm
820 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 10,2x7,5x2,3mm, 1ct
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Precious Opal - Australia - 10x7mm Precious Opal - Australia - 10x7mm
890 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 9,7x7,4x1,7mm, 0,76ct
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Precious Opal - Australia - 10x5mm Precious Opal - Australia - 10x5mm
890 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 9,9x5,3x2,3mm, 0,73ct
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Precious Opal - Australia - 7x6mm Precious Opal - Australia - 7x6mm
240 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 7x6,3x1,6mm, 0,45ct
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Precious Opal - Australia - 27x8mm Precious Opal - Australia - 27x8mm
4 360 KčIn StockNatural precious opal from Australia (Lightning Ridge) - 26,9x8x5,6mm, 7,41ct
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Precious Opal - Australia - 21x12mm 7ct Precious Opal - Australia - 21x12mm 7ct
87 460 KčIn StockNatural precious opal from Australia (Lightning Ridge) - Black Opal, 20,7x12x4,5mm, 6,72ct
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Precious Opal - Australia - 37x17mm, 17ct Precious Opal - Australia - 37x17mm,...
82 550 KčIn StockNatural precious opal from Australia (Lightning Ridge) - Black Opal, 36,6x17,4x4,5mm, 16,51ct
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Precious Opal - Australia - 19x16mm Precious Opal - Australia - 19x16mm
7 340 KčIn StockNatural precious opal from Australia (Lightning Ridge) - Black Opal, 18,5x15,9x3,4mm, 6ct
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Precious Opal - Australia - 21x13mm Precious Opal - Australia - 21x13mm
8 520 KčIn StockNatural precious opal from Australia (Lightning Ridge) - Black Opal, 20,6x12,6x3,5mm, 4,23ct
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Precious Opal - Australia - 25x14mm 8ct Precious Opal - Australia - 25x14mm 8ct
970 KčIn StockNatural precious opal from Australia (Lightning Ridge) - Dark Opal, 25,3x14x3,5mm, 8ct
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Precious Opal - Australia 10x5x4mm Precious Opal - Australia 10x5x4mm
490 KčOut of stockNatural precious opal from Australia (Lightning Ridge) 9,8x5x4mm, 1,08ct
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Precious Opal - Australia 10x9mm Precious Opal - Australia 10x9mm
390 KčOut of stockNatural precious opal from Australia (Lightning Ridge) 10,3x8,6x4,2mm, 2,36ct
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Rough opal - vial 28x22mm Rough opal - vial 28x22mm
1 490 KčOut of stockNatural unworked precious opals from Australia - Ligtning Ridge - A bottle with a plug. 28x22x10mm bottle with watter
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Precious opal - Australia 8x8mm Precious opal - Australia 8x8mm
2 490 KčOut of stockPrecious opal from Australia - Coober Pedy - 8x8,1x2,2mm, 0,85ct
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Precious opal - Australia 8x8mm Precious opal - Australia 8x8mm
2 490 KčOut of stockPrecious opal from Australia - Coober Pedy - 7,9x7,9x2,5mm, 0,93ct
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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 KčOut of 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 KčOut of 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 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 12x8mm Precious Opal - Australia 12x8mm
2 840 KčOut of 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 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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