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AAA+ Quality 100% Natural Boulder Opal Oval Cabochon Gemstone 76.5 Ct 44X30X6 mm

$ 4.39 $ 2.63

AAA+ Quality 100% Natural Boulder Opal Oval Cabochon Gemstone 27 Ct. 28X17X6 mm

$ 4.39 $ 2.63

63.6ct Pipe Boulder Matrix Opal - Purple Australian Natural Gem Stone, Freeform

$ 158.4 $ 95.04

13.2 Cts Unheated Australian Boulder Opal Loose Gemstone Cabochon Natural OG701

$ 25.51 $ 15.3

boulder opal,17.3 carats, 22 x 19 x 4 mm, face drilled, red pinfire

$ 35.15 $ 21.09

35.7 carat boulder opal on black cord, 37 x 22 x 8mm, bright green fire

$ 32.22 $ 19.33

Natural Boulder Opal Loose Gemstone Cabochon From Australia 59 Cts WG710

$ 17.59 $ 10.55

undrilled boulder opal, blue & green fire, 30 carats, 26 x 21 x 4 mm, rectangle

$ 39.55 $ 23.73

Rough Boulder Opal 482.55 ct 100% Australian Natural Rough Opal From QLD N2783

$ 132 $ 79.2

Boulder Opal Cabochon 9.5x11.5mm with 4mm dome from Australia (15005)

$ 21.99 $ 13.19

Boulder Opal Cabochon 8x13mm with 5mm dome from Australia (13668)

$ 16.71 $ 10.02

BOULDER OPAL 60 x 40 MM ALL NATURAL VIVID COLORS COLLECTOR'S STONE

$ 322.07 $ 193.24

76.8 Ct Natural Boulder Opal Radiant Cabochon Loose Gemstone For Jewelry AS-5403

$ 5.27 $ 3.16

7.01cts Rare Multi Color Australia Koroit Natural Boulder Opal Loose Gemstones

$ 21.99 $ 13.19

Flickering Colors * 35ct Natural Australian Solid Koroit Boulder Opal * Video

$ 145.19 $ 87.11

2.3 ct Black Boulder Opal Cabochon from Australia - Blue Purple Green!

$ 175.99 $ 105.59

Huge Koroit Collector Opal! Blue Green Veins! Whole 1100 CT Flashfire-Opals

$ 933.6 $ 560.16

Beautiful Natural Australian 26ct Solid Koroit Boulder Opal * See Video Clip

$ 108.9 $ 65.34

4.10 Ct Australian Crystal Opal with a Beautiful Play of colors!!

$ 572 $ 343.2

Australian Natural Boulder Opal Pendant, Side Drilled

$ 26.39 $ 15.83

Natural Mesmerizing Boulder Opal Gemstone 234.65 Cts Loose Rough From Australia

$ 205.92 $ 123.55

2.86Ct RAREST MULTI-COLOR MATRIX PRECIOUS NATURAL BOULDER OPAL !!

$ 7.24 $ 4.34

Boulder Solid Opal 100% 11.20 cts Ready to be set in Jewelry (Has Cracks) B1493

$ 44 $ 26.4

boulder opal, bright red fire vein, 9.15 carats, 19 x 15 x 5 mm

$ 43.95 $ 26.37

Yowah Pattern Piece, Boulder Opal 28.79 cts, S8731

$ 30.79 $ 18.47

Tiger Eye Boulder Opal Oval Cabochon Stone 14.75ct ~ 15/16"L x 0.5"in.W 2.9g

$ 43.99 $ 26.39

Green Violet Turquoise * 36ct Natural Australian Solid Koroit Boulder Opal

$ 145.19 $ 87.11

Rough Boulder Opal 30.45 ct 100% Australian Natural Rough Opal From QLD N2611

$ 13.2 $ 7.91

Rough Boulder Opal 100% Australian Natural Rough Opal From QLD N1726

$ 22 $ 13.2

Yowah Patterns, Boulder Opal 20.6 cts S9202

$ 43.99 $ 26.39

Gem Color-Filled Veins * 16ct Natural Australian Solid Koroit Boulder Opal

$ 198 $ 118.8

AAA+ Quality 100% Natural Boulder Opal Pear Cabochon Gemstone 20 Ct. 28X17X5 mm

$ 7.03 $ 4.21

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

$ 6.15 $ 3.69

100% Natural Australian BOULDER OPAL Cushion Cab 44.15 Cts 24x29x5 mm Gemstone

$ 6.15 $ 3.69

22.60 Cts 100% Natural BOULDER OPAL Pear Cabochon 16x33x5 mm Loose Gemstone

$ 6.15 $ 3.69

21.00 Cts 100% Natural BOULDER OPAL OVAL Cabochon 14X23X6 mm Loose Gemstone

$ 6.15 $ 3.69

Boulder Opal 8x19mm with 3.5mm dome over 4cts. from Australia (10035)

$ 69.51 $ 41.7

Natural Australian BOULDER OPAL Fancy Cabochon 33.50 Cts 15x38x6 mm Gemstone

$ 15.83 $ 9.49

Australia Natural YOWAH BOULDER OPAL Rough Rub Lot 44.30cts

$ 21.12 $ 12.67

Natural Boulder Opal Free-Form Pendant with 0.40 Carats Total of Round Diamonds

$ 2107.6 $ 1264.56

100% Natural Australian BOULDER OPAL Pear Cab 33.45 Cts 23x29x6 mm Gemstone

$ 6.15 $ 3.69

Boulder Opal Natural Cabochon Mix Gemstone 3 Pcs Wholesale Lot 109.8cts LAW60

$ 14.07 $ 8.44

King-Sized Sparkler * 125ct Natural Australian Solid Koroit Boulder Opal * Video

$ 339.9 $ 203.93

AAA+ Quality 100% Natural Boulder Opal Oval Cabochon Gemstone 55.9 Ct 37X21X9 mm

$ 7.91 $ 4.74

Natural Boulder Opal Loose Gemstone Cabochon From Australia 20.6 Cts OG605

$ 26.39 $ 15.83

Boulder Opal Cabochons 12x8mm 2-3mm dome over 6 cts from Australia (7620)

$ 35.19 $ 21.11

Boulder Opal Cabochon 31x18mm with 6.5mm Dome from Australia (6854)

$ 25.95 $ 15.57

Natural Koroit Boulder Opal Gemstone 24.9 Cts Loose Cabochon Pair WG418

$ 35.19 $ 21.11

105 gram boulder opal partially polished slab - Australia rough

$ 79.2 $ 47.52

Boulder Opal 21x26x14mm over 45 cts. from Australia (3787)

$ 51.91 $ 31.14

Australia Natural BOULDER OPAL Rough Rub 18.70cts

$ 23.76 $ 14.25

Boulder Opal Cabochon 11.5x9.5mm with 3mm Dome from Australia (14553)

$ 13.19 $ 7.91

89 gram Koroit boulder opal partially polished slab - Australia

$ 88 $ 52.8

19ct Natural Australian Solid Koroit Boulder Opal * See Video Clip

$ 92.4 $ 55.44

Boulder Opal Rough 9.85 TCW 100% Natural Australian Queensland Gemstone N3219

$ 13.2 $ 7.91

10.93Ct AMAZING RARE ! MATRIX DESIGN PICTURE KOROIT BOULDER OPAL

$ 4.39 $ 2.63

9.94Ct UNIQUE RAREST GEM ! MULTI COLOR FLASHY AUSTRALIAN BOULDER OPAL BALL

$ 4.39 $ 2.63

3.30Ct AMAZING RARE ! MATRIX DESIGN PICTURE KOROIT BOULDER OPAL

$ 4.39 $ 2.63

17.31 ct AIG CERTIFIED FANCY (27 X 12 MM) UNHEATED / UNTREATED BOULDER OPAL

$ 560.55 $ 336.33

Nice 4.55 carat Boulder Opal Cabochon freeform - Australia

$ 30.8 $ 18.48

Color-Filled Veins * 13ct Natural Australian Solid Koroit Boulder Opal * Video

$ 105.6 $ 63.35

Boulder Opal Cabochon 19x9mm with 4mm dome from Australia (12205)

$ 17.59 $ 10.55

46.9 Ct Natural Boulder Opal Cushion Cabochon Loose Gemstone For Jewelry GK5666

$ 8.79 $ 5.27

49.35 Ct Natural Boulder Opal Fancy Cabochon Loose Gemstone For Jewelry GK-5691

$ 8.79 $ 5.27

3.65 ct Pleasant Fancy (16 x 8 mm) Multi Color Australian Koroit Boulder Opal

$ 62.47 $ 37.48

24.08ct Half Moon Cabochon Natural Winton Area Matrix Boulder Opal, Australia

$ 66 $ 39.6

24 gram nice boulder opal rough chunk - Australia cabbing material

$ 52.8 $ 31.67

Color Play, Yowah Boulder Opal 10.98 cts S9213

$ 30.79 $ 18.47

Beautiful Gem Colors * 79ct Natural Australian Solid Matrix Boulder Opal * Video

$ 165 $ 99

25.10 Cts 100% Natural BOULDER OPAL PEAR Cabochon 17X22X7 mm Loose Gemstone

$ 7.03 $ 4.21

47.20 Cts 100% Natural BOULDER OPAL Cushion Cabochon 25x28x6 mm Loose Gemstone

$ 10.55 $ 6.33

52.65 Cts 100% Natural BOULDER OPAL Fancy Cabochon 24x35x7 mm Loose Gemstone

$ 9.67 $ 5.8

100% Natural Boulder Opal Pear Cabochon 42.75 Cts 20x33x6 mm Australian Gemstone

$ 11.43 $ 6.85

40.40 Cts 100% Natural BOULDER OPAL Fancy Cabochon 23x36x5 mm Loose Gemstone

$ 10.55 $ 6.33

Boulder Opal Rough 7.50 TCW 100% Natural Australian Queensland Gemstone N3214

$ 13.2 $ 7.91

QUEENSLAND 287g BOULDER OPAL ROUGH GEM DISPLAY SPECIMEN SOUVENIR OCA12465

$ 113.52 $ 68.11

1.56Ct UNIQUE RAREST GEM ! CRYSTAL CORES MATRIX DESIGN AUSTRALIAN BOULDER OPAL

$ 4.39 $ 2.63

28.59Ct AMAZING RARE ! MATRIX DESIGN PICTURE KOROIT BOULDER OPAL

$ 4.39 $ 2.63

10.54Ct AMAZING RARE ! MATRIX DESIGN PICTURE KOROIT BOULDER OPAL

$ 4.39 $ 2.63

3.24Ct UNIQUE RAREST GEM ! CRYSTAL CORES MATRIX DESIGN AUSTRALIAN BOULDER OPAL

$ 4.39 $ 2.63

12.1ct Boulder Opal, Light Blue Mauve Swirls Australian Natural Gem Stone

$ 86.24 $ 51.74

Veins of Color * 34ct Natural Australian Solid Matrix Boulder Opal * See Video

$ 122.1 $ 73.25

22.95 Cts Natural Australian Boulder Opal Cabochon Loose Gemstone WG770

$ 17.59 $ 10.55

Rough Boulder Opal 15.00 ct 100% Australian Natural Rough Opal From QLD N2702

$ 22 $ 13.2

51.95 Cts Unheated Australian Boulder Opal Loose Gemstone Cabochon Natural WG767

$ 21.99 $ 13.19

Green Violet Turquoise 12ct Natural Australian Solid Koroit Boulder Opal * Video

$ 92.4 $ 55.44

Genuine Multi-colored Boulder Opal Loose Oval Cut 7.1*6.1*3.5mm 1ct Rainbown

$ 147.84 $ 88.7

2.92 Ct CRYSTAL CORES MATRIX DESIGN AUSTRALIAN BOULDER OPAL

$ 9.16 $ 5.49

Natural Boulder Opal Gemstone 58.05 Cts Loose

$ 44 $ 26.4

4.56 ct Valuable Fancy (17 x 10 mm) Multi Color Australian Koroit Boulder Opal

$ 8.79 $ 5.27

30ct Natural Australian Solid Koroit Boulder Opal * See Video Clip

$ 122.1 $ 73.25

Boulder Opal Cabochons over 16cts. from Australia Set of 3 (3733)

$ 51.91 $ 31.14

Boulder Opal Cabochon 20x12mm with 5mm dome 16.16cts (2090)

$ 52.79 $ 31.67

100% Natural Australian BOULDER OPAL Pear Cab 89.35 Cts 40x46x6 mm Gemstone

$ 35.19 $ 21.11

100% Natural Australian BOULDER OPAL Octagon Cab 98.55 Cts 32x43x6 mm Gemstone

$ 26.39 $ 15.83

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

$ 9.4 $ 5.64

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

$ 9.01 $ 5.4

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

$ 15.69 $ 9.41

50.75Cts. 100% Natural Australian Boulder Opal Fancy Cabochon Top Loose Gemstone

$ 9.49 $ 5.69

58.30Cts. 100% Natural Australian Boulder Opal Pear Cabochon Top Loose Gemstone

$ 13.19 $ 7.91