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3.43 ct REMARKABLE FANCY (12 X 9 MM) MULTI COLOR AUSTRALIAN KOROIT BOULDER OPAL

$ 45.75 $ 27.45

4.48 ct Superb Fancy (15 x 9 mm) Play of Colors Australian Koroit Boulder Opal

$ 7.03 $ 4.21

30.2ct Yowah Matrix Opal Red Ironstone Oval Queensland AU

$ 87.99 $ 52.79

2.28 ct Splendid Fancy (16 x 6 mm) Multi Color Australian Koroit Boulder Opal

$ 47.51 $ 28.5

Pendant Size! 26.7ct Solid Black Boulder Opal Pink & Green Pear Queensland AU

$ 87.99 $ 52.79

Solid Boulder Opal RED MULTICOLOR 2ct Freeform Queensland!

$ 123.19 $ 73.91

Natural Australian Boulder Opal Gorgeous Color & Pattern 2.74 ct

$ 104.71 $ 62.82

Boulder Opal Cabochon 13x10mm 11x8mm with 3.5mm Dome over 5cts Australia (4006)

$ 35.19 $ 21.11

Boulder Opal Cabochon 18x22mm with 5mm Dome from Australia over 21cts (7298)

$ 28.59 $ 17.15

BOULDER OPAL 38 x 31 MM ALL NATURAL VIVID COLORS COLLECTOR'S STONE

$ 88.87 $ 53.32

Blue Dream Boulder Opal: Video!!

$ 250.8 $ 150.47

Natural Australian Boulder Opal Gorgeous Color & Pattern 1.25 ct

$ 79.19 $ 47.51

3pc Loose Opals Oval Cut 4.5 Ctw #H31

$ 22 $ 13.2

Gemmy! 10.8ct Boulder Opal BRIGHT BLUE GREEN Pinfire Queensland AU

$ 263.99 $ 158.39

Large 87.6 gram Koroit Boulder Opal, Queensland, Australia - 8.3 cm across

$ 351.99 $ 211.19

Creamy Striped Boulder Opal: Video!!

$ 91.52 $ 54.91

7.64 ct Eye-popping Fancy (19 x 14 mm) Multi Australian Koroit Boulder Opal

$ 8.79 $ 5.27

Boulder Opal 13x16mm from Australia over 9cts (7306)

$ 28.59 $ 17.15

36.4 ct Incredibly Vibrant Koroit Boulder Opal Cabochon from Australia - blue!

$ 263.99 $ 158.39

Natural Australian Boulder Opal Gorgeous Color & Pattern 1.74 ct

$ 60.71 $ 36.42

Blue Dream Boulder Opal: Video!!

$ 87.12 $ 52.27

Large Nevada Wood Opal Preserved in Water

$ 1056 $ 633.6

Bright Boulder Opal Guitar Pick: Video!!

$ 418 $ 250.8

Loose cabochon 4.7ctw. Mexican BOULDER OPAL GEMSTONE Colorful beautiful

$ 112.63 $ 67.57

2.08 ct Topnotch Fancy (15 x 5 mm) Multi Color Australian Koroit Boulder Opal

$ 44.87 $ 26.92

40.1ct 23x22x7.3mm Fine Koroit Australian Boulder Opal Cabochon Loose Gem

$ 78.32 $ 46.99

Green Flash Boulder Opal: Video!

$ 148.72 $ 89.23

Boulder Opal Cabochon 17x12mm with 4.5mm dome from Australia (12134)

$ 34.75 $ 20.85

Australian Boulder Opal! 232.50ct side-drilled specimen! great colors/patterns!

$ 242 $ 145.19

BOULDER OPAL 45 X 26 MM ALL NATURAL VIVID COLORS COLLECTOR'S STONE

$ 95.03 $ 57.01

5.55 ct Elegant Fancy (22 x 8 mm) Multi Color Australian Koroit Boulder Opal

$ 146.07 $ 87.64

Rainbow Glitter Boulder Opal: Video!!

$ 307.12 $ 184.27

10.30 ct Dazzling Fancy (22 x 18 mm) Multi Color Australian Koroit Boulder Opal

$ 134.63 $ 80.77

NATURAL UNIQUE 2 SIDED AUSTRALIAN KOROIT BOULDER OPAL PENDANT

$ 176 $ 105.6

Duck Bird Swan Boulder Opal Stone Carving Cabochon Polished Gem

$ 88 $ 52.8

Natural Australian Boulder Opal Gorgeous Color & Pattern 2.36 ct

$ 104.71 $ 62.82

Queensland Boulder Opal 50.6 Grams Caramel Color Patch w/ Red Multicolor Stripes

$ 616 $ 369.6

BOULDER OPAL GEM STONE*19ct*LOTS OF COLOR*LOTS OF FLASH*

$ 42.24 $ 25.34

QUEENSLAND 298c BOULDER OPAL AUSTRALIA PREFORM ROUGH RUB PARCEL OCA13716

$ 4.39 $ 2.63

QUEENSLAND 18.8c BOULDER OPAL GEM AUSTRALIA POLISHED CAB UNSET OCA13727

$ 0.87 $ 0.52

KOROIT QUEENSLAND 16.3c BOULDER OPAL GEM AUSTRALIA POLISHED CAB UNSET OCA13729

$ 4.12 $ 2.47

16.12ct 29.2x15.2mm Pear Cabochon Natural Petrified Wood Boulder Opal, Australia

$ 0.87 $ 0.52

QUEENSLAND 310c BOULDER OPAL AUSTRALIA PREFORM ROUGH RUB PARCEL OCA13714

$ 4.39 $ 2.63

QUEENSLAND 6c BOULDER OPAL GEM AUSTRALIA POLISHED CAB UNSET OCA13730

$ 6.6 $ 3.95

QUEENSLAND 8.9c BOULDER OPAL GEM AUSTRALIA POLISHED CAB UNSET OCA13728

$ 9.24 $ 5.54

QUEENSLAND 182c BOULDER OPAL AUSTRALIA PREFORM ROUGH RUB PARCEL OCA13715

$ 4.84 $ 2.9

4.93Ct Oval cut 11 x 10 Multi-Color Matrix Natural Korotit Nut Boulder Opal

$ 6.15 $ 3.69

10.46Ct DAZZLING ! MULTI COLOR FLASHY KOROIT BOULDER OPAL PENDENT

$ 65.99 $ 39.59

4.55Ct Cushion cut 12 x 9 Multi-Color Matrix Natural Korotit Nut Boulder Opal

$ 10.14 $ 6.08

Australian Koroit Boulder Opal Cabochons LOT of 2 Natural 33.8 & 20.74 Carat

$ 78.32 $ 46.99

Lot of 2 Australian Queensland Koroit Boulder Raw Opal Rough 104 carats

$ 0.87 $ 0.52

Very Pretty Polished Boulder Opal Cabochon in Jar- .7 Grams- Vintage Estate Find

$ 6.6 $ 3.95

19.76ct Rectangle Cabochon Natural Petrified Wood Boulder Opal, Australia

$ 0.87 $ 0.52

8.50Ct UNIQUE RAREST GEM ! MATRIX DESIGN AUSTRALIAN BOULDER OPAL

$ 4.39 $ 2.63

Queensland Boulder Opal #00210

$ 176 $ 105.6

5.34Ct 8 PCS UNIQUE RAREST GEM ! MULTI COLOR FLASHY AUSTRALIAN BOULDER OPAL

$ 9.67 $ 5.8

32.15 Cts 100% Natural BOULDER OPAL Pear Cabochon 19x27x6 mm Loose Gemstone

$ 7.03 $ 4.21

37.43ct Free Form Cabochon Natural Koroit Matrix Boulder Opal, Australia

$ 0.87 $ 0.52

5.41 ct Superb Fancy (18 x 8 mm) Multi Color Australian Koroit Boulder Opal

$ 35.19 $ 21.11

10.15 ct Fancy (17 x 15 mm) Play of Colors Australian Koroit Boulder Opal

$ 3.51 $ 2.1

5.64 ct FABULOUS FANCY (17 X 11 MM) MULTI COLOR AUSTRALIAN KOROIT BOULDER OPAL

$ 72.15 $ 43.29

12.7ct 25.5x15x5mm Blue Teardrop Australian Boulder Opal Cabochon Stone

$ 42.24 $ 25.34

37.4 carat boulder opal on black cord, green fire, 28 x 18 x 11mm

$ 32.51 $ 19.5

10.15 ct Fancy (17 x 15 mm) Play of Colors Australian Koroit Boulder Opal

$ 3.51 $ 2.1

Large Queensland Boulder Opal with Thick Bright Green Veins Polished

$ 92.4 $ 55.44

Natural Boulder Opal Amazing Oval Shape Cabochon Loose Gemstone 56 Cts AA-1668

$ 4.39 $ 2.63

boulder opal, bright blue pool, 47 carats, 31 x 17 x 7 mm

$ 70.35 $ 42.21

Bright Blue Colors Beautiful Large Koroit Boulder Opal From Australia

$ 96.8 $ 58.08

9.3 gram boulder opal rough specimen - Australia

$ 44 $ 26.4

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

$ 264 $ 158.4

33.25ct FANTASTIC Natural Solid Australian YOWAH Boulder Opal Cab Stone ~ VIDEO

$ 339.24 $ 203.54

Natural Boulder Opal Amazing Pear Shape Cabochon Loose Gemstone 85 Cts AA-1746

$ 4.39 $ 2.63

Boulder Solid Opal 4.20 cts 100% Natural Solid Ready To Set in Jewelry B1576

$ 35.2 $ 21.12

48.55 Ct. Natural Boulder Opal Pear Cabochon Loose Gemstone For Jewelry GK-5695

$ 3.51 $ 2.1

220cts Rough Australian Pipe Crystal Boulder Opal parcel

$ 38.28 $ 22.96

435cts Australian Boulder opal rough Parcel

$ 22.17 $ 13.3

Dazzling Color-Filled Veins * 40ct Natural Australian Solid Yowah Boulder Opal

$ 558.79 $ 335.28

1.02ct 10.5x5.2mm Oval Cab Natural Winton Area Matrix Boulder Opal, Australia

$ 0.87 $ 0.52

Nice 2.3 ct Boulder Opal Cabochon freeform - Australia cab

$ 26.4 $ 15.83

STUNNING! 8.7ct Dark Matrix Boulder Opal GREEN BLUE Oval Queensland!

$ 219.99 $ 131.99

18ct Yowah Matrix Opal Bright Blue Green Oval Queensland AU

$ 131.99 $ 79.19

13.15ct Yowah Matrix Opal Green Pinfire Freeform Queensland AU

$ 52.79 $ 31.67

Chunky! 13.5ct Solid Boulder Opal Royal Blue Broadflash QLD Australia!

$ 52.79 $ 31.67

7.55 ct AIG CERTIFIED OVAL CABOCHON CUT (19 X 15 MM) BOULDER OPAL STONE

$ 251.67 $ 151

11CT. NATURAL SOLID AUSTRALIAN OPAL FROM MINE

$ 1144 $ 686.4

9.73 ct AIG CERTIFIED FIRST-CLASS FANCY CUT (27 X 12 MM) AUSTRALIA BOULDER OPAL

$ 186.55 $ 111.93

Boulder opal

$ 57.2 $ 34.32

28.80 ct FABULOUS FANCY (40 X 22 MM) MULTI COLOR AUSTRALIAN KOROIT BOULDER OPAL

$ 558.79 $ 335.27

boulder opal, 16 carats, 19 x 15 x 6 mm, bright green fire veins

$ 43.95 $ 26.37

Boulder opal pendant, sterling silver, 30 carats, 32 mm x 18 mm, blue face

$ 43.95 $ 26.37

21.5 carat boulder opal, 37 x 12 x 4 mm, blue veins

$ 43.95 $ 26.37

3.05 ct Fancy Shape (15 x 9 mm) Multi Color Australian Koroit Boulder Opal

$ 49.27 $ 29.56

3.22 ct Beautiful Fancy (11 x 9 mm) Multi Color Australian Koroit Boulder Opal

$ 94.15 $ 56.49

face drilled boulder opal, 27.5 carats, 26 x 27 x 4 mm, green fire

$ 61.55 $ 36.93

4.63 ct Superb Fancy (19 x 8 mm) Play of Colors Australian Koroit Boulder Opal

$ 3.51 $ 2.1

12.64Ct DAZZLING ! METALLIC BLUE FLASHY AUSTRALIAN BOULDER OPAL PENDENT

$ 17.59 $ 10.55

Amazing Colorshow * 21ct Natural Australian Solid Koroit Nut Boulder Opal

$ 1271.59 $ 762.95

Boulder Opal Rough 12.95 TCW 100% Natural Australian Queensland Gemstone N3205

$ 13.2 $ 7.91

24.83ct 27x16mm Oval Cabochon Natural Koroit Matrix Boulder Opal, Australia

$ 0.87 $ 0.52

1.25ct 9.2x5.6mm Pear Cabochon Natural Winton Area Matrix Boulder Opal Australia

$ 0.87 $ 0.52