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Natural Gem Australian Boulder and Matrix Opal Round & Coin Beads Bracelet 7.5"

$ 59.84 $ 35.9

47.65Ct DAZZLING ! NEON GREEN BLUE FLASHY AUSTRALIAN BOULDER OPAL PENDENT

$ 65.99 $ 39.59

QUEENSLAND BOULDER OPAL 44.1c DOUBLET GEM POLISHED CABOCHON UNSET OCA13543

$ 131.12 $ 78.67

10.85 Cts Unheated Australian Boulder Opal Loose Gemstone Cabochon Natural OG733

$ 13.19 $ 7.91

18.68Ct UNHEATED METALLIC GREEN BLUE FLASHY AUSTRALIAN BOULDER OPAL PENDENT

$ 17.59 $ 10.55

14.71Ct UNHEATED NEON BLUE GREEN FLASHY AUSTRALIAN BOULDER OPAL

$ 43.99 $ 26.39

Fiery Gem Colors * 24ct Natural Australian Solid Matrix Boulder Opal * See Video

$ 642.4 $ 385.44

11.70Ct UNIQUE RAREST GEM ! MATRIX DESIGN AUSTRALIAN BOULDER OPAL

$ 4.39 $ 2.63

Electric Gem Streaks * Natural Australian 27ct Solid Boulder Opal * See Video

$ 2032.8 $ 1219.67

2.98Ct UNIQUE RAREST GEM ! CRYSTAL CORES MATRIX DESIGN AUSTRALIAN BOULDER OPAL

$ 4.39 $ 2.63

Electric Color Flashes * 32ct Natural Australian Solid Matrix Boulder Opal

$ 167.2 $ 100.32

3.82ct Half Moon Cabochon Natural Winton Area Matrix Boulder Opal, Australia

$ 46.2 $ 27.72

Australia Natural BOULDER OPAL Cutting Rough Lot 24.75cts

$ 17.6 $ 10.56

Australian Natural Boulder Opal Pendant, Side Drilled

$ 30.79 $ 18.47

Bright & Flashy * 22ct Natural Australian Solid Matrix Boulder Opal * See Video

$ 0.88 $ 0.52

Australian Boulder Opal, Waves Of Color Play On Matrix Of Warm Brown Oval Stone

$ 41.06 $ 24.63

10.17Ct UNIQUE RAREST GEM ! MATRIX DESIGN AUSTRALIAN BOULDER OPAL

$ 4.39 $ 2.63

Veins of Color * 12ct Natural Australian Solid Matrix Boulder Opal * See Video

$ 0.88 $ 0.52

Big Colorful Boulder Opal Polished from Australia

$ 57.2 $ 34.32

28.69ct 22.4mm Round Cabochon Natural Koroit Matrix Boulder Opal, Australia

$ 0.87 $ 0.52

0.61ct Free Form Cabochon Natural Winton Area Matrix Boulder Opal, Australia

$ 0.87 $ 0.52

36.00 Cts 100% Natural BOULDER OPAL PEAR Cabochon 18X29X6 mm Loose Gemstone

$ 11.43 $ 6.85

46.20 Cts 100% Natural BOULDER OPAL Cushion Cabochon 21X25X7 mm Loose Gemstone

$ 12.31 $ 7.38

YOWAH NUT! 22.6ct Multicolor Boulder Matrix Opal Oval from QLD!

$ 43.99 $ 26.39

Australian Boulder Opal. 105g

$ 36.96 $ 22.17

8.94 ct Fancy Shape (17 x 16 mm) Multi Color Australian Koroit Boulder Opal

$ 39.59 $ 23.75

Bar-Cut! 2.7ct Solid Boulder Opal Aqua Blue Rectangle QLD Australia

$ 21.99 $ 13.19

Old Stock Australian Queensland Boulder Opal 46 carats Tons of FIRE!

$ 43.99 $ 26.39

5.83 ct Eye-popping Fancy (19 x 13 mm) Multi Australian Koroit Boulder Opal

$ 8.79 $ 5.27

9.44 ct Premium Fancy (20 x 12 mm) Play of s Australian Koroit Boulder Opal

$ 8.79 $ 5.27

Australian boulder opal, 33 carats, 25 x 22 x 6 m, nearly full face, pinfire

$ 35.15 $ 21.09

Natural Australian Koroit Boulder Opal Side Drilled Unusual Patterns By Bluegems

$ 8.79 $ 5.27

Seal Boulder Opal Stone Carving Cabochon Polished Gem Otter

$ 44 $ 26.4

Stunning Cabochon Boulder Opal White and Green Fire! - VIDEO USA Seller 31.34 ct

$ 7.92 $ 4.75

22.75 carat undrilled boulder opal, blue green fire veins, 20 x 23 x 4mm

$ 26.35 $ 15.81

OUTSTANDING 3.2ct Solid Boulder Opal BRIGHT ORANGE & GREEN Queensland!

$ 527.99 $ 316.79

Duck Bird Boulder Opal Stone Carving Cabochon Polished Gem

$ 35.2 $ 21.12

BOULDER OPAL 51 x 36 MM ALL NATURAL VIVID COLORS COLLECTOR'S STONE

$ 187.43 $ 112.45

Stunning 12.4ct Wood Fossil Boulder Opal Bright Blue Green Freeform QLD

$ 219.99 $ 131.99

Gemmy 7ct Solid Boulder Opal MULTICOLOR Freeform Queensland AU!

$ 219.99 $ 131.99

2.00 ct Astonishing Fancy (18 x 6 mm) Multi Australian Koroit Boulder Opal

$ 7.03 $ 4.21

8.3oz Beautiful Boulder Opal Chunk #tita

$ 4.4 $ 2.64

10.38 ct Fancy Shape (24 x 14 mm) Multi Color Australian Koroit Boulder Opal

$ 8.79 $ 5.27

10.00 Cts 100% Natural BOULDER OPAL PEAR Cabochon14X16X6 MM Loose Gemstone

$ 10.55 $ 6.33

100% Natural Australian BOULDER OPAL Pear Cab 35.40 Cts 23x32x5 mm Gemstone

$ 6.15 $ 3.69

23.11ct 23.4x17.4mm Free Form Cabochon Natural Koroit Matrix Boulder Opal

$ 0.87 $ 0.52

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

$ 5.27 $ 3.16

168.65 Ct Natural Australian Blue Opal Rough Specimen AAA Quality Gemstone

$ 0.13 $ 0.07

Gem Australian Boulder Opal 180 Ct. Museum Top Grade large Gemstone

$ 108.9 $ 65.34

Super Rare Natural Gem Boulder Australian Opal 4 to 7MM Round Beads Necklace 17"

$ 85.36 $ 51.21

1.09Ct UNIQUE RAREST GEM ! CRYSTAL CORES VIOLET FLASH AUSTRALIAN BOULDER OPAL

$ 4.39 $ 2.63

20.78Ct DAZZLING ! NEON GREEN BLUE FLASHY AUSTRALIAN BOULDER OPAL PENDENT

$ 65.99 $ 39.59

27.15Ct METALLIC GREEN BLUE ORANGE FLASHY AUSTRALIAN BOULDER OPAL PENDENT

$ 65.99 $ 39.59

QUEENSLAND 317c BOULDER OPAL AUSTRALIA PREFORM ROUGH RUB PARCEL OCA13736

$ 4.39 $ 2.63

QUEENSLAND 14.5c BOULDER OPAL GEM AUSTRALIA POLISHED CAB UNSET OCA13751

$ 3.74 $ 2.24

QUEENSLAND 24.5c BOULDER OPAL GEM AUSTRALIA POLISHED CAB UNSET OCA13749

$ 6.6 $ 3.95

62.35Ct UNIQUE RARE ! ORANGE GREEN BLUE FLASHY AUSTRALIAN BOULDER OPAL

$ 8.79 $ 5.27

QUEENSLAND 177c BOULDER OPAL AUSTRALIA PREFORM ROUGH RUB PARCEL OCA13737

$ 21.12 $ 12.67

QUEENSLAND 8.3c BOULDER OPAL GEM AUSTRALIA POLISHED CAB UNSET OCA13750

$ 3.74 $ 2.24

10.69Ct UNIQUE COLLECTION ! SUPERB BLUE GREEN FLASHY PICTURE KOROIT BOULDER OPAL

$ 17.59 $ 10.55

18.52Ct SUPERB COLLECTION ! VIOLET BLUE FLASHY MATRIX DESIGN KOROIT BOULDER OPAL

$ 17.59 $ 10.55

25.10 Cts 100% Natural BOULDER OPAL Oval Cabochon 15X32X6 mm Loose Gemstone

$ 8.79 $ 5.27

54.60 Cts 100% Natural BOULDER OPAL Cushion Cabochon 21X35X6 mm Loose Gemstone

$ 12.31 $ 7.38

Big & Beautiful * 128ct Natural Australian Koroit Boulder Opal * See Video Clip

$ 264 $ 158.4

7.49Ct UNIQUE RAREST ! CRYSTAL CORES MATRIX DESIGN PICTURE KOROIT BOULDER OPAL

$ 7.03 $ 4.21

Australian boulder opal matched pair, 77 cts total, 39 x 24 x 4 mm great color!

$ 202.35 $ 121.41

"Africa"? Yowah Boulder Opal 15.84 cts cts S8304

$ 61.59 $ 36.95

Polished Natural Australian Queensland Boulder Opal Pendant Bead, Over 20 Cts.

$ 25.52 $ 15.31

Nice Polished Boulder Opal Cabochon in Gem Jar- .4 Grams- Vintage Estate Find

$ 1.76 $ 1.05

QUEENSLAND 164c BOULDER OPAL AUSTRALIA PREFORM ROUGH RUB PARCEL OCA13782

$ 63.36 $ 38.01

Multiple Gem Colors * 17ct Natural Australian Solid Matrix Boulder Opal * Video

$ 206.8 $ 124.08

Old Australian Queensland Boulder Opal 4.8ct Bright pink pinfire

$ 51.92 $ 31.15

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

$ 4.39 $ 2.63

40ct Natural Australian Boulder Opal YOWAH Sided Drilled Stone SPLENDID Pattern

$ 17.59 $ 10.55

Old Australian Queensland Boulder Opal 10.5ct 18x13mm Bright

$ 60.72 $ 36.43

Green & Violet * 57ct Natural Australian Solid Yowah Boulder Opal * See Video

$ 0.88 $ 0.52

Bright Color Flashes * 10ct Natural Australian Solid Matrix Boulder Opal * Video

$ 140.8 $ 84.48

15.35 Cts 100% Natural BOULDER OPAL PEAR Cabochon 12X22X6 mm Loose Gemstone

$ 6.15 $ 3.69

70.45Ct DAZZLING ! METALLIC GREEN BLUE FLASHY KOROIT BOULDER OPAL PENDENT

$ 43.99 $ 26.39

Natural Gem Australian Boulder Fire Opal 4 to 7mm Size Round Beads Necklace 17"

$ 87.12 $ 52.27

Bright Green & Violet 16ct Natural Australian Solid Koroit Boulder Opal * Video

$ 127.6 $ 76.55

1.04ct 8.4x6.5mm Oval Cabochon Natural Koroit Nut Matrix Black Opal, Australia

$ 0.87 $ 0.52

Stunning Green & Purple Fire!!  3.2 CT Natural Australian Boulder Opal Pendant

$ 48.4 $ 29.04

QUEENSLAND 790c BOULDER OPAL AUSTRALIA PREFORM ROUGH RUB PARCEL OCA13781

$ 17.16 $ 10.29

QUEENSLAND 23.4c BOULDER OPAL GEM AUSTRALIA POLISHED CAB UNSET OCA13797

$ 0.87 $ 0.52

5.67 gram Koroit boulder opal rough - Australia

$ 44 $ 26.4

Vintage Loose 10 x 28.5 mm Australian Boulder Opal 2.68 Grams 13.40 Ct 1 1/8"

$ 307.95 $ 184.77

19.6 gram boulder opal rough specimen with blue colors - Australia cabbing rough

$ 35.2 $ 21.12

QUEENSLAND 8.6c BOULDER OPAL GEM AUSTRALIA POLISHED CAB UNSET OCA13795

$ 22.88 $ 13.72

0.56ct 7x5mm Oval Cabochon Natural Koroit Nut Matrix Boulder Opal, Australia

$ 0.87 $ 0.52

19.61Ct UNIQUE RARE ! METALLIC BLUE FLASHY MATRIX PICTURE KOROIT BOULDER OPAL

$ 17.59 $ 10.55

Australian Boulder Opal Rough 🔥AMAZING Red Green Blue🔥 26g/130 carats #2152

$ 28.82 $ 17.29

Vintage Purple Drilled Boulder Opal Pendant 23 Carats #257

$ 21.12 $ 12.67

10.46Ct DAZZLING ! MULTI COLOR FLASHY KOROIT BOULDER OPAL PENDENT

$ 65.99 $ 39.59

Australian Boulder Opal Rough - 🔥Red Orange Green🔥 - 2.2 oz / 62g - #2151

$ 5.27 $ 3.16

QUEENSLAND 18.3c BOULDER OPAL GEM AUSTRALIA POLISHED CAB UNSET OCA13794

$ 18.92 $ 11.35

Color-Filled Veins * 4ct Natural Australian Solid Matrix Boulder Opal * Video

$ 10.11 $ 6.07

QUEENSLAND 12.4c BOULDER OPAL GEM AUSTRALIA POLISHED CAB UNSET OCA13796

$ 6.6 $ 3.95

Bright & Flashy * 13ct Natural Australian Solid Yowah Boulder Opal * See Video

$ 378.4 $ 227.04

Natural Boulder Opal Amazing Oval Shape Cabochon Loose Gemstone 58 Cts AA-1675

$ 4.39 $ 2.63