Opal

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2.55ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 60AK: This fully polished Ethiopian Welo opal features a dark smoked base with vivid, sweeping play-of-color shifting across its glossy dome surface, measured at 14.7x6.3x4.8mm. The black smoke treatment de

2026

2.55ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 60AK

ThousandPlanetThung Wat Don, Sathorn, Bangkok

3.37 Carats Natural Ethiopian Welo Tangerine Orange Opal Cabochon Loose Gemstone, 46AG: This glossy polished opal boasts a rich glowing tangerine orange base interlaced with streaks of vivid lime yellow, electric green and faint magenta shifting play of color, measured at 13.5x10.4x5mm,

2026

3.37 Carats Natural Ethiopian Welo Tangerine Orange Opal Cabochon Loose Gemstone, 46AG

ThousandPlanetThung Wat Don, Sathorn, Bangkok

27.41ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 10AV: Hand polished rounded rectangular cushion cabochon of natural Queensland matrix boulder opal, featuring speckled warm brown ironstone base matrix interlaced with intricate branching opal veins of deep

2026

27.41ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 10AV

ThousandPlanetThung Wat Don, Sathorn, Bangkok

21.54ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 5AV: Hand polished rectangular bar cabochon of natural Queensland matrix boulder opal, featuring dark speckled ironstone host interlaced with broad luminous opal channels blending sky blue and turquoise ir

2026

21.54ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 5AV

ThousandPlanetThung Wat Don, Sathorn, Bangkok

2.62 Carats Natural Ethiopian Welo Violet Blue Opal Cabochon Loose Gemstone, 56AG: This striking opal carries a saturated deep violet and electric blue iridescent glow across its smooth polished dome, measured at 13.4x9.6x6.1mm, the uniform rich cool-toned flash delivers bold eye-ca

2026

2.62 Carats Natural Ethiopian Welo Violet Blue Opal Cabochon Loose Gemstone, 56AG

ThousandPlanetThung Wat Don, Sathorn, Bangkok

18.21ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 12AV: Hand polished compact rounded square cushion cabochon formed from natural Queensland matrix boulder opal, featuring warm speckled brown ironstone host matrix crisscrossed with intricate branching opal

2026

18.21ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 12AV

ThousandPlanetThung Wat Don, Sathorn, Bangkok

76.37ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 49AY: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

76.37ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 49AY

ThousandPlanetThung Wat Don, Sathorn, Bangkok

46.06ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 62AX: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

46.06ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 62AX

ThousandPlanetThung Wat Don, Sathorn, Bangkok

27.10ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 59AY: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

27.10ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 59AY

ThousandPlanetThung Wat Don, Sathorn, Bangkok

75.57ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 11AY: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

75.57ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 11AY

ThousandPlanetThung Wat Don, Sathorn, Bangkok

40.51ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 16AY: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

40.51ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 16AY

ThousandPlanetThung Wat Don, Sathorn, Bangkok

58.0ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 50AX: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

58.0ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 50AX

ThousandPlanetThung Wat Don, Sathorn, Bangkok

1.84ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 68AK: This fully polished Ethiopian Welo opal features a dark smoked base with vivid, sweeping play-of-color shifting across its glossy dome surface, measured at 10.3x7.7x4.4mm. The black smoke treatment de

2026

1.84ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 68AK

ThousandPlanetThung Wat Don, Sathorn, Bangkok

1.73ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 75AK: This fully polished Ethiopian Welo opal features a dark smoked base with vivid, sweeping play-of-color shifting across its glossy dome surface, measured at 11.4x8.3x4.3mm. The black smoke treatment de

2026

1.73ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 75AK

ThousandPlanetThung Wat Don, Sathorn, Bangkok

2.00ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 67AK: This fully polished Ethiopian Welo opal features a dark smoked base with vivid, sweeping play-of-color shifting across its glossy dome surface, measured at 11.2x8.3x4.6mm. The black smoke treatment de

2026

2.00ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 67AK

ThousandPlanetThung Wat Don, Sathorn, Bangkok

3.00 Carats Natural Ethiopian Welo Teal Blue Green Opal Cabochon Loose Gemstone, 59AG: This lustrous polished opal features a rich teal base filled with swirling patches of neon mint green and bright cerulean blue shifting play of color, measured at 12.7x8.7x5.3mm, its cool aquatic mult

2026

3.00 Carats Natural Ethiopian Welo Teal Blue Green Opal Cabochon Loose Gemstone, 59AG

ThousandPlanetThung Wat Don, Sathorn, Bangkok

2.66 Carats Natural Ethiopian Welo Bright Sky Blue Opal Cabochon Loose Gemstone, 50AG: This smooth polished opal features a vivid saturated sky blue base scattered with soft mint green and faint lavender rolling play of color, measured at 12.8x8.8x5.5mm, its cool uniform blue palette cr

2026

2.66 Carats Natural Ethiopian Welo Bright Sky Blue Opal Cabochon Loose Gemstone, 50AG

ThousandPlanetThung Wat Don, Sathorn, Bangkok

8.40ct Natural Australian Queensland Matrix Boulder Opal Triangular Cabochon, 55AX: Hand polished smooth freeform triangle cabochon of natural Queensland matrix boulder opal, featuring densely speckled deep brown ironstone matrix covered with interconnected web-like opal veins that d

2026

8.40ct Natural Australian Queensland Matrix Boulder Opal Triangular Cabochon, 55AX

ThousandPlanetThung Wat Don, Sathorn, Bangkok

65.20ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 63AX: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

65.20ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 63AX

ThousandPlanetThung Wat Don, Sathorn, Bangkok

64.38ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 28AY: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

64.38ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 28AY

ThousandPlanetThung Wat Don, Sathorn, Bangkok

53.06ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 76AX: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

53.06ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 76AX

ThousandPlanetThung Wat Don, Sathorn, Bangkok

40.33ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 25AY: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

40.33ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 25AY

ThousandPlanetThung Wat Don, Sathorn, Bangkok

35.25ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 68AX: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

35.25ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 68AX

ThousandPlanetThung Wat Don, Sathorn, Bangkok

$36.48ct Natural Australian Queensland Matrix Boulder Opal Freeform Pentagon Cabochon, 14AV: Hand polished asymmetrical freeform pentagon cabochon crafted from natural Queensland matrix boulder opal, featuring fine glitter-speckled deep brown ironstone host laced with intricate branching frac$

2026

36.48ct Natural Australian Queensland Matrix Boulder Opal Freeform Pentagon Cabochon, 14AV

ThousandPlanetThung Wat Don, Sathorn, Bangkok

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Opal Auctions

1.97Ct Welo Black Faceted Opal Polished - Ethiopian Opal , 445E

29.90Ct Moss Agate Cabochon - Polished - 31x21mm Approx , 320E

Australian Lightning Ridge Crystal Black Opal Rough Chip Jar (Good For Display), 344B

The Aurora Treasury Gems & Jewels #3

Ksmith Heritage Auctioneers

Starts on:

Jelutong, Penang, MY

3 days Left

6.40 Cts Natural amethyst Gemstone - 12X10.5X8 mm

1.25 Carats Deep Blue Natural Aquamarine Loose Gemstone - 9X6X4 mm

Baby Pink Top quality Natural Kunzite loose Gemstone - 3.25 Carats - 9X8.5X6 mm

NO RESERVE Loose Gemstones

Fantasy Jewelry

Starts on:

Muscat, Muscat, AE

2 days Left

Impressive Mid Century Viking Epic Stockholm Smoke Pine Gray Lotus Wayne Husted Art Glass Vase

GIVENCHY Vintage Designer Matte Silver G Cutout Necklace, Bracelet & Pierced Earrings Ensemble

Vintage Jewelry, Early Christmas & Unusual

Atlee Raber Auctions

Starts on:

Dundee, OH, US

4 days Left

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