Opal

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2.27ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 20FX: 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 11x8x5mm. The black smoke treatment deepens

2026

2.27ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 20FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

51.22ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 89AX: 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

51.22ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 89AX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.70ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 40BY: 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 13x8x5mm. The black smoke treatment deepens

2026

2.70ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 40BY

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.02ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 18FX: 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 10x8x5mm. The black smoke treatment deepens

2026

2.02ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 18FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.29ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 33FL: 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 12x7.4x5mm. The black smoke treatment deepen

2026

2.29ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 33FL

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.76ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 61FX: 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 11x7x4mm. The black smoke treatment deepens

2026

1.76ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 61FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.50ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 46FX: 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 12x8x3mm. The black smoke treatment deepens

2026

1.50ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 46FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.44ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 6FX: 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 11x8x5mm. The black smoke treatment deepens

2026

2.44ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 6FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

97.20ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 38AX: 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

97.20ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 38AX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.13ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 57FX: 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 11x8x5mm. The black smoke treatment deepens

2026

2.13ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 57FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.27ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 55FX: 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 12x9x4mm. The black smoke treatment deepens

2026

2.27ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 55FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.40ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 13FX: 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 10x9x5mm. The black smoke treatment deepens

2026

2.40ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 13FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

47.77ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 88AY: 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

47.77ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 88AY

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.91ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 38FL: 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 10.2x8x5.3mm. The black smoke treatment deep

2026

1.91ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 38FL

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

65.38ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 47AY: 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

65.38ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 47AY

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.82ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 72AK: 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 12.3x8.8x5mm. The black smoke treatment deep

2026

2.82ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 72AK

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.32ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 9FL: 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 11x8.9x3mm. The black smoke treatment deepen

2026

1.32ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 9FL

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.28ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 36FL: 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 10.9x8.8x5.3mm. The black smoke treatment de

2026

2.28ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 36FL

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

3.14ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 41BY: 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 12x9x6mm. The black smoke treatment deepens

2026

3.14ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 41BY

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.28ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 32FL: 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 11.1x8.6x5.5mm. The black smoke treatment de

2026

2.28ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 32FL

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.35ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 22FX: 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 11x8x5mm. The black smoke treatment deepens

2026

2.35ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 22FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.98ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 42FX: 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 11x9x5mm. The black smoke treatment deepens

2026

2.98ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 42FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.93ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 4FX: 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 11x8x4mm. The black smoke treatment deepens

2026

1.93ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 4FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

3.00ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 56BY: 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 12x9x5mm. The black smoke treatment deepens

2026

3.00ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 56BY

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

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Opal Auctions

Rocki Gorman Sterling Silver Multi-Strand Cross Necklace 179.75g

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Starts on:

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Large Rookwood plaque, Summer, Hurley, 1948, 12 by 14 inches.

Rookwood Vellum, Barn Swallows and Moon, Shirayamadani, 1907.

Rare Rookwood Aerial Blue mug with Polar Bear, Shirayamadani, 1896.

Fall 2026: Rookwood + Art Pottery

Starts on:

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7.20 Carats Paired Peridot Gemstones ? 9?8?6 mm Natural Pair

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Fantasy Jewelry

Starts on:

Muscat, Muscat, AE

4 days Left

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