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40.90Cts. 100% Natural Australian Boulder Opal Fancy Cabochon Top Loose Gemstone

$ 7.91 $ 4.74

25.40 Cts 100% Natural BOULDER OPAL FANCY Cabochon 13X30X7 mm Loose Gemstone

$ 7.91 $ 4.74

100% Natural Koroit Boulder Opal 25.25 Cts PEAR Cabochon 22X23X6 mm Gemstone

$ 7.91 $ 4.74

52.00 Cts 100% Natural Australian Boulder Opal Pear Cabochon Top Loose Gemstone

$ 10.85 $ 6.51

100% Natural Koroit Boulder Opal 38.60 Cts PEAR Cabochon 16X37X7 mm Gemstone

$ 17.59 $ 10.55

37.85 Cts 100% Natural BOULDER OPAL Trillion Cabochon 25X32X5 mm Loose Gemstone

$ 8.65 $ 5.19

100% Natural Koroit Boulder Opal 21.60 Cts OVAL Cabochon 16X18X7 mm Gemstone

$ 8.79 $ 5.27

40.55 Cts 100% Natural Australian Boulder Opal HEART Cabochon Top Loose Gemstone

$ 7.91 $ 4.74

39.00 Cts 100% Natural BOULDER OPAL PEAR Cabochon 19X36X6 mm Loose Gemstone

$ 8.79 $ 5.27

100% Natural Koroit Boulder Opal 45.15 Cts PEAR Cabochon 15X40X8 mm Gemstone

$ 19.35 $ 11.61

69.40 Cts 100% Natural Australian Boulder Opal Pear Cabochon Top Loose Gemstone

$ 16.71 $ 10.02

100% Natural Koroit Boulder Opal 35.00 Cts PEAR Cabochon 18X33X6 mm Gemstone

$ 14.95 $ 8.97

47.35 Cts 100% Natural BOULDER OPAL PEAR Cabochon 16X39X7 mm Loose Gemstone

$ 9.67 $ 5.8

41.15 Cts 100% Natural BOULDER OPAL PEAR Cabochon 23X24X9 mm Loose Gemstone

$ 8.79 $ 5.27

18.15 Cts 100% Natural BOULDER OPAL Fancy Cabochon 15x24x5 mm Loose Gemstone

$ 5.27 $ 3.16

Flashy Colors * 12ct Natural Australian Solid Yowah Boulder Opal * See Video

$ 69.3 $ 41.58

45.90 ct Fancy Cabochon Shape (32 x 23 mm) Australian Koroit Boulder Opal

$ 8.79 $ 5.27

2.10 ct Lovely Fancy (11 x 6 mm) Multi Color Australian Koroit Boulder Opal

$ 7.03 $ 4.21

10.66Ct UNIQUE RAREST GEM ! MATRIX DESIGN AUSTRALIAN BOULDER OPAL

$ 4.39 $ 2.63

Flashy Gem Colors * 23ct Natural Australian Solid Matrix Boulder Opal * Video

$ 105.6 $ 63.35

20.1 Cts Unheated Australian Boulder Opal Loose Gemstone Cabochon Natural WG448

$ 21.99 $ 13.19

Lovely Colors * Big 32ct Natural Australian Solid Koroit Boulder Opal * Video

$ 155.1 $ 93.05

2.2 ct Boulder Opal Cabochon freeform - Australia

$ 30.8 $ 18.48

Superb Pattern & Colors * 16ct Natural Australian Solid Koroit Boulder Opal

$ 158.4 $ 95.04

15ct Boulder Opal, Purple Hidden World - Australian Natural Gem Stone

$ 140.8 $ 84.48

Andys Garage Sale - 65 ct Austrailian Boulder Opal - Very rare, Beauty Flashes

$ 158.4 $ 95.04

361ct Huge Jowah Opal Nut With Gem Farben-Kern! Video Flashfire-Opals

$ 2699.03 $ 1619.41

20.55ct Free Form Cabochon Natural Winton Area Matrix Boulder Opal, Australia

$ 59.4 $ 35.64

75.11 ct MASSIVE AUSTRALIAN BOULDER OPAL FANCY CABOCHON GEMSTONE

$ 215.59 $ 129.35

matched boulder opal pair 56.2 carats 26 x 18 x 5 mm blue and green fire veins

$ 87.94 $ 52.76

19.9 Cts Natural Australian Boulder Opal Cabochon Loose Gemstone WG401

$ 30.79 $ 18.47

4.13 ct World class Fancy (16 x 9 mm) Multi Australian Koroit Boulder Opal

$ 83.59 $ 50.15

Red and Yellow Flashing, Yowah Boulder Opal 10.96 cts S9008

$ 30.79 $ 18.47

49.15 Cts Unheated Australian Boulder Opal Loose Gemstone Cabochon Natural IG566

$ 15.83 $ 9.49

Lovely 40ct Natural Australian Solid Yowah Boulder Opal Pair * See Video Clips

$ 141.9 $ 85.14

40.20 Cts 100% Natural BOULDER OPAL Fancy Cabochon 21x33x6 mm Loose Gemstone

$ 8.79 $ 5.27

3.02 ct Eye-popping Fancy (14 x 9 mm) Multi Australian Koroit Boulder Opal

$ 43.99 $ 26.39

AAA+ Quality 100% Natural Boulder Opal Pear Cabochon Gemstone 50 Ct. 42X23X7 mm

$ 7.91 $ 4.74

Australia Natural BOULDER OPAL Cutting Rough Rubs Lot 20.30cts

$ 30.8 $ 18.48

Natural Rare Gem Boulder Australian Opal 4MM Size Round Beads Necklace 17" 50Ct.

$ 47.12 $ 28.27

5.33 CT Hidden Dragon Natural Australian Boulder Opal Pendant Green Purple Fire

$ 78.32 $ 46.99

Rough Boulder Opal 93.85 ct 100% Australian Natural Rough Opal From QLD N2506

$ 202.4 $ 121.44

AAA 100% Natural Boulder Opal Radiant Cabochon Loose Gemstone 58.5 Ct 32X24X7 mm

$ 4.39 $ 2.63

Andy's Gem Garage Sale - #3 Austrailian Boulder Opal 3 pieces - 2.15cts FIRE!!!

$ 39.6 $ 23.76

22.74Ct RAREST MULTI-COLOR MATRIX PRECIOUS NATURAL KOROIT NUT BOULDER OPAL !

$ 21.76 $ 13.05

Natural Boulder Opal Loose Gemstone Cabochon From Australia 12.3 Cts WG733

$ 17.59 $ 10.55

Brilliant Gem Colors * 25ct Natural Australian Solid Koroit Boulder Opal Pendant

$ 310.2 $ 186.11

Rich Reds * Natural Australian 25ct Solid Yowah Boulder Opal * Video

$ 204.6 $ 122.76

Opalized Wood * 82ct Natural Australian Solid Yowah Boulder Opal Pendant * Video

$ 115.5 $ 69.3

48.90Cts100% Natural Australian Boulder Opal CUSHION Cabochon Top Loose Gemstone

$ 8.96 $ 5.38

Electric Color-Filled Veins * 24ct Natural Australian Solid Koroit Boulder Opal

$ 184.8 $ 110.88

Rough Boulder Opal 29.5 ct 100% Australian Natural Rough Opal From QLD N2009

$ 21.99 $ 13.19

Boulder Opal Cabochon 12.5x12mm with 5.5mm dome from Australia (15271)

$ 19.79 $ 11.87

5.49Ct UNIQUE RAREST ! CRYSTAL CORES MATRIX DESIGN PICTURE KOROIT BOULDER OPAL

$ 5.27 $ 3.16

sterling silver boulder opal heart pendant, 40.5 carats, 35 x 26 x 7 1/2 mm

$ 61.55 $ 36.93

68.8 ct Colorful Koroit Boulder Opal - Freeform Cabochon from Australia

$ 87.99 $ 52.79

39.10 Cts 100% Natural Australian BOULDER OPAL Oval Cabochon 21x37x5 mm Gemstone

$ 17.59 $ 10.55

Lots of Flicker * 14ct Natural Australian Solid Yowah Boulder Opal * See Video

$ 92.4 $ 55.44

Rough Boulder Opal 21.40 ct 100% Australian Natural Rough Opal From QLD N1402

$ 8.8 $ 5.28

Vivid Gem Colors * 7ct Natural Australian Solid Koroit Boulder Opal * See Video

$ 155.1 $ 93.05

100% Natural Boulder Opal Pear Cabochon 64.50 Cts 26x44x6 mm Australian Gemstone

$ 13.19 $ 7.91

Carved Swan Boulder Opal Cabochon 18.5x18mm with 6mm dome (17000)

$ 21.55 $ 12.93

Vibrant Double-Sided 7ct Natural Australian Solid Matrix Boulder Opal * Videos

$ 135.3 $ 81.18

43.70Cts,Natural Flashing Australian Boulder Opal Round Cab Size 26X7MM Gemstone

$ 30.36 $ 18.22

51 gram boulder opal rough - Australia specimen

$ 52.8 $ 31.67

Nice 9 gram boulder opal rough specimen - Australia cabbing rough

$ 44 $ 26.4

Boulder Opal 100% Natural Gemstone Pear Cabochon 31X38X05mm 52.70Cts

$ 36.07 $ 21.64

64.76ct Triangle Cabochon Natural Koroit Nut Matrix Boulder Opal, Australia

$ 79.2 $ 47.52

Boulder opal

$ 202.4 $ 121.44

5.55 Cts Natural Australian Boulder Opal Cabochon Loose Gemstone BO1

$ 8.79 $ 5.27

29.62Ct DAZZLING ! NEON VIOLET PINK FLASHY AUSTRALIAN BOULDER OPAL PENDENT

$ 43.99 $ 26.39

7.57 ct REMARKABLE FANCY (24 X 10 MM) MULTI AUSTRALIAN KOROIT BOULDER OPAL

$ 202.39 $ 121.43

136 gram Boulder Opal Display Piece from Queensland, Australia - 6.5 cm across

$ 263.99 $ 158.39

Yowah Boulder Opal 4.45 cts S9121

$ 26.39 $ 15.83

Australian Boulder Wood Replacement Opal 28.46ct Natural Fossil Drilled Pendant

$ 28.75 $ 17.25

Flashy Gem Colors * 31ct Natural Australian Solid Koroit Boulder Opal * Video

$ 158.4 $ 95.04

Nice 84 ct Boulder Opal Cabochon freeform - Australia

$ 44 $ 26.4

Brilliant Gem Colors * 63ct Natural Australian Solid Koroit Boulder Opal * Video

$ 716.1 $ 429.66

Color-Filled Veins * 39ct Natural Australian Solid Koroit Boulder Opal * Video

$ 204.6 $ 122.76

Nice 3.8 ct Boulder Opal Cabochon freeform - Australia cab

$ 26.4 $ 15.83

Nice 2.5 ct Boulder Opal Cabochon freeform - Australia cab

$ 26.4 $ 15.83

Rough Boulder Opal :180.1 ct 100% Australian Natural Rough Opal From QLD N2466

$ 35.2 $ 21.12

21.4ct Boulder Opal, Deep Blues Australian Natural Gem Stone

$ 228.8 $ 137.28

BOULDER OPAL 52 x 40 MM ALL NATURAL VIVID COLORS COLLECTOR'S STONE

$ 254.32 $ 152.59

93.00 Cts 100% Natural BOULDER OPAL Cushion Cabochon 31x35x8 mm Loose Gemstone

$ 14.95 $ 8.97

80.20 Cts 100% Natural BOULDER OPAL Fancy Cabochon 31x51x6 mm Loose Gemstone

$ 14.95 $ 8.97

100% Natural Boulder Opal Pear Cabochon 63.10 Cts 26x44x7 mm Australian Gemstone

$ 12.31 $ 7.38

6.34 ct Exquisite Fancy (28 x 10 mm) Multi Color Australian Koroit Boulder Opal

$ 112.63 $ 67.57

36.50Cts 100% Natural BOULDER OPAL Pear Cabochon 21x28x7 mm Loose Gemstone

$ 8.79 $ 5.27

44.20 Cts 100% Natural BOULDER OPAL PEAR Cabochon 23X43X5 mm Loose Gemstone

$ 10.55 $ 6.33

Electric Color Flashes 24ct Natural Australian Solid Matrix Boulder Opal * Video

$ 155.1 $ 93.05

6.38 ct Very good Fancy (19 x 12 mm) Multi Color Australian Koroit Boulder Opal

$ 55.43 $ 33.25

Nice 4.7 gram boulder opal rough specimen - Australia

$ 44 $ 26.4

Electric Color Streaks * 13ct Natural Australian Solid Matrix Boulder Opal

$ 158.4 $ 95.04

20.55 Cts Natural Metrix Australian Boulder Opal Loose Gemstone Cabochon OG703

$ 13.19 $ 7.91