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3.63 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 11.3x9.2mm, 10XM: This exceptional 3.63-carat Koroit boulder opal cabochon is a natural work of art, featuring vivid veins of electric blue and iridescent play-of-color that snake through a warm, earthy ironstone matri

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3.63 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 11.3x9.2mm, 10XM

Est. $80-$160

$5

ThousandPlanetSathorn, Bangkok

29.04 Carats Winton Boulder Opal Rough Specimen - Natural Queensland Origin, LZ97: This substantial Winton boulder opal rough is a stunning example of Australian opal at its most dramatic. The natural ironstone matrix forms a rugged, textured canvas, interspersed with vivid veins an

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29.04 Carats Winton Boulder Opal Rough Specimen - Natural Queensland Origin, LZ97

Est. $100-$200

$5

ThousandPlanetSathorn, Bangkok

8.51 Carats Boulder Opal Cabochon - Natural Matrix & Play-of-Color Specimen, 57XM: This 8.51ct boulder opal cabochon, measuring 23x12mm, is a striking example of Australia's iconic gemstone, showcasing the unique beauty of nature's artistry. The teardrop-shaped cabochon is polished

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8.51 Carats Boulder Opal Cabochon - Natural Matrix & Play-of-Color Specimen, 57XM

Est. $60-$120

$5

ThousandPlanetSathorn, Bangkok

Chinese nephrite jade dragon boulder carving: 3 x 1.8 x 0.6 inches. 153 grams. Box is not included. We will inhouse ship items to you very affordable and efficient. Select self-arrange shipping.

Jun 08, 2026

Chinese nephrite jade dragon boulder carving

Est. $180-$1,000

$90

Lake Lanier Antiques LLCGainesville , GA

5.61 Carats Color-Flecked Koroit Boulder Opal - Natural Australian Stone, LZ45: This magnificent 5.61 carat Koroit boulder opal, measuring 15.2mm x 10.9mm x 3.2mm, is a breathtaking showcase of nature's complexity. Polished into a smooth oval cabochon, its face features a rich, t

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5.61 Carats Color-Flecked Koroit Boulder Opal - Natural Australian Stone, LZ45

Est. $70-$140

$5

ThousandPlanetSathorn, Bangkok

16.80 Carats Matrix Boulder Opal Triangular Cabochon - Natural Australian Stone, 16XC: This striking matrix boulder opal cabochon, measuring 23.9 x 17.6 x 5.6 mm, is a dramatic display of natural geological artistry. Polished into a bold triangular shape, the stone features an intricate

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16.80 Carats Matrix Boulder Opal Triangular Cabochon - Natural Australian Stone, 16XC

Est. $70-$140

$5

ThousandPlanetSathorn, Bangkok

6.68 Carats Cream-Blue Boulder Opal with Dark Matrix - Natural Australian Stone, 36XM: This substantial boulder opal presents a striking visual narrative, with a creamy, pale base that transitions into soft, iridescent blue opal layers, all dramatically framed by a large, dark, textured

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6.68 Carats Cream-Blue Boulder Opal with Dark Matrix - Natural Australian Stone, 36XM

Est. $50-$100

$5

ThousandPlanetSathorn, Bangkok

19.97 Carats Winton Boulder Opal Rough Specimen - Natural Australian Stone, 39XP: This exquisite Winton boulder opal rough specimen showcases a brilliant band of vivid sky-blue and periwinkle play-of-color, with subtle hints of lavender iridescence that glow softly under light. Mea

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19.97 Carats Winton Boulder Opal Rough Specimen - Natural Australian Stone, 39XP

Est. $50-$100

$5

ThousandPlanetSathorn, Bangkok

3.87 Carats Multi-Color Koroit Boulder Opal - Natural Australian Stone, LZ43: This stunning 3.87 carat Koroit boulder opal, measuring 14.8mm x 10.4mm x 2.7mm, is a breathtaking canvas of natural color and pattern. Polished into a smooth oval cabochon, its face is dominated by r

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3.87 Carats Multi-Color Koroit Boulder Opal - Natural Australian Stone, LZ43

Est. $70-$140

$5

ThousandPlanetSathorn, Bangkok

Chinese jade boulder carving of a rooster on the hill: 3.5 inches height not including wooden base. 229 grams. We will inhouse ship items to you very affordable and efficient. Select self-arrange shipping.

Jun 08, 2026

Chinese jade boulder carving of a rooster on the hill

Est. $180-$300

$90

Lake Lanier Antiques LLCGainesville , GA

2.36 Carats Pastel Blue Winton Boulder Opal - Natural Australian Stone, LZ40: This breathtaking 2.36 carat Winton boulder opal is a miniature natural landscape, polished into an elegant oval cabochon measuring 10.8mm x 8.4mm x 2.8mm. Its broad face displays a soft, milky opal f

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2.36 Carats Pastel Blue Winton Boulder Opal - Natural Australian Stone, LZ40

Est. $70-$140

$5

ThousandPlanetSathorn, Bangkok

27.47 Carats Winton Boulder Opal Rough Specimen - Natural Queensland Origin, LZ90: This striking Winton boulder opal rough showcases the dramatic beauty of Australian boulder opal. The polished face reveals a broad sheet of opal glowing with shifting hues of deep cobalt blue, violet

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27.47 Carats Winton Boulder Opal Rough Specimen - Natural Queensland Origin, LZ90

Est. $80-$160

$5

ThousandPlanetSathorn, Bangkok

5.45 Carats Boulder Opal Cabochon - Natural Matrix Vein Specimen, 61XM: This 5.45ct boulder opal cabochon, measuring 18x9mm, is a striking example of Australia's iconic gemstone, showcasing the unique beauty of nature's artistry. The teardrop-shaped cabochon is polished t

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5.45 Carats Boulder Opal Cabochon - Natural Matrix Vein Specimen, 61XM

Est. $60-$120

$5

ThousandPlanetSathorn, Bangkok

3.08 Carats Boulder Opal Cabochon - Natural Matrix & Play-of-Color Specimen, 54XM: This 3.08ct boulder opal cabochon, measuring 10x9mm, is a striking example of Australia's iconic gemstone, showcasing the unique beauty of nature's artistry. The triangular cabochon is polished to a s

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3.08 Carats Boulder Opal Cabochon - Natural Matrix & Play-of-Color Specimen, 54XM

Est. $60-$120

$5

ThousandPlanetSathorn, Bangkok

An Australian Koroit Yowah Boulder Opal Rough Lot, 46.85g, 48ZH: A parcel of rough Koroit Yowah boulder opal, with individual pieces ranging from 3-4 cm in size, totaling 46.85 grams. The specimens are characterized by their ironstone host rock matrix, which displa

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An Australian Koroit Yowah Boulder Opal Rough Lot, 46.85g, 48ZH

Est. $50-$100

$5

ThousandPlanetSathorn, Bangkok

18k Yellow Gold Boulder Opal Diamond Pendant Necklace with Rope Chain: 18k Yellow Gold Boulder Opal Diamond Pendant Necklace with Rope Chain This exquisite pendant necklace features a stunning freeform boulder opal, showcasing a captivating blue base enhanced by a remark

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18k Yellow Gold Boulder Opal Diamond Pendant Necklace with Rope Chain

$3,710

BidhausNew York, NY

17.81 Carats Deep Blue and Brown Matrix Boulder Opal Cabochon - Natural Australian Stone, 41XM: This substantial boulder opal cabochon features a dramatic, layered composition of deep blue opal interwoven with rich brown and maroon ironstone matrix, accented by milky white opal veins that flow a

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17.81 Carats Deep Blue and Brown Matrix Boulder Opal Cabochon - Natural Australian Stone, 41XM

Est. $80-$160

$5

ThousandPlanetSathorn, Bangkok

67.01 Carats Winton Boulder Opal Rough Specimen - Natural Queensland Origin, LZ98: This impressive Winton boulder opal rough is a stunning showcase of Australian boulder opal's dramatic natural beauty. The polished face reveals a rich tapestry of opal and ironstone, where vivid patc

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67.01 Carats Winton Boulder Opal Rough Specimen - Natural Queensland Origin, LZ98

Est. $140-$280

$5

ThousandPlanetSathorn, Bangkok

19.83 Carats Winton Boulder Opal Rough Specimen - Natural Queensland Origin, LZ93: This striking Winton boulder opal rough showcases the dramatic beauty of Australian boulder opal. The polished face reveals a vivid sheet of opal glowing with intense, saturated hues of electric viole

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19.83 Carats Winton Boulder Opal Rough Specimen - Natural Queensland Origin, LZ93

Est. $80-$160

$5

ThousandPlanetSathorn, Bangkok

4.92 Carats Multicolor Koroit Boulder Opal - Natural Australian Stone, LZ44: This exceptional 4.92 carat Koroit boulder opal, measuring 13.9mm x 10.1mm x 3.7mm, is a masterpiece of natural artistry. Polished into a smooth oval cabochon, its face is dominated by a rich, texture

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4.92 Carats Multicolor Koroit Boulder Opal - Natural Australian Stone, LZ44

Est. $70-$140

$5

ThousandPlanetSathorn, Bangkok

14.83ct Boulder Opal Cabochon - Soft Pastel Play-of-Color Specimen, 44XM: This 14.83ct boulder opal cabochon, measuring 24x16mm, is a striking example of Australia's iconic gemstone, showcasing the delicate beauty of nature's artistry. The freeform triangular cabochon is po

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14.83ct Boulder Opal Cabochon - Soft Pastel Play-of-Color Specimen, 44XM

Est. $50-$100

$5

ThousandPlanetSathorn, Bangkok

A FINE SHOUSHAN STONE BOULDER CARVING WITH BASE: 20th Century; High: 4.00 inch; Width: 3.25 inch

May 30, 2026

A FINE SHOUSHAN STONE BOULDER CARVING WITH BASE

Est. $120-$180

$60

William's Auctions, LLCFlushing, NY

Platinum Cocktail Ring with Colorful Boulder Opal and Diamond Accents: Platinum Cocktail Ring with Colorful Boulder Opal and Diamond Accents Make a bold statement with this exquisite Platinum Bezel Colorful Boulder Opal Ring adorned with diamond accents. Featuring a stun

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Platinum Cocktail Ring with Colorful Boulder Opal and Diamond Accents

$2,890

BidhausNew York, NY

56.36 Carats Winton Boulder Opal Rough Specimen - Natural Queensland Origin, LZ94: This impressive Winton boulder opal rough is a stunning showcase of Australian boulder opal's natural beauty. The polished face reveals a broad, continuous sheet of opal glowing with shifting hues of

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56.36 Carats Winton Boulder Opal Rough Specimen - Natural Queensland Origin, LZ94

Est. $120-$240

$5

ThousandPlanetSathorn, Bangkok

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