Opal

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2.32ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 81FX: 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

2.32ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 81FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

35.65ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 19AX: 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

35.65ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 19AX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.42ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 58FX: 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

2.42ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 58FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.96ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 53FX: 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 10x8x4mm. The black smoke treatment deepens

2026

1.96ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 53FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.01ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 39FL: 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 10x7.9x5.6mm. The black smoke treatment deep

2026

2.01ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 39FL

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.56ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 70FX: 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 10x7x4mm. The black smoke treatment deepens

2026

1.56ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 70FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.25ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 71FX: 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 10x8x3mm. The black smoke treatment deepens

2026

1.25ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 71FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.62ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 43FX: 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 10x8x3mm. The black smoke treatment deepens

2026

1.62ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 43FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.22ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 37FX: 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

2.22ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 37FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.00ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 78FX: 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 10x8x4mm. The black smoke treatment deepens

2026

2.00ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 78FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

3.18ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 20BY: 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 14x9x5mm. The black smoke treatment deepens

2026

3.18ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 20BY

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

3.34ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 26BY: 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 15x9x5mm. The black smoke treatment deepens

2026

3.34ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 26BY

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.70ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 14FX: 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 11x8x3mm. The black smoke treatment deepens

2026

1.70ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 14FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.55ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 45FL: 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 15x9.1x4.6mm. The black smoke treatment deep

2026

2.55ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 45FL

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.41ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 68FX: 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 10x9x3mm. The black smoke treatment deepens

2026

1.41ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 68FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

5.65ct Natural Ethiopian Welo Opal Cabochon Loose Gemstone, 35BY: This smoothly polished cabochon is genuine natural Ethiopian Welo opal. The translucent base hosts vivid multi-coloured play-of-colour, displaying dynamic flashes of multi color that shift as the view

2026

5.65ct Natural Ethiopian Welo Opal Cabochon Loose Gemstone, 35BY

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

4.71ct Natural Ethiopian Welo Opal Cabochon Loose Gemstone, 21BY: This smoothly polished cabochon is genuine natural Ethiopian Welo opal. The translucent base hosts vivid multi-coloured play-of-colour, displaying dynamic flashes of multi color that shift as the view

2026

4.71ct Natural Ethiopian Welo Opal Cabochon Loose Gemstone, 21BY

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.77ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 51FX: 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 9x7x5mm. The black smoke treatment deepens t

2026

1.77ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 51FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

3.13ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 34FX: 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

3.13ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 34FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.43ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 47FX: 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 10x8x3mm. The black smoke treatment deepens

2026

1.43ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 47FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

3.29ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 26FX: 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 9x7mm. The black smoke treatment deepens the

2026

3.29ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 26FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

1.63ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 52FX: 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

1.63ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 52FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

2.29ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 27FX: 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

2.29ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 27FX

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

51.30ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 41AY: 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

51.30ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 41AY

Sathorn, Bangkok

ThousandPlanet

4.5

(315)

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Opal Auctions

0.95 Carats Natural Yellow Sapphire Gemstone - 6X5X3 mm

3.80 Carats Natural Santa Maria Aquamarine - 11X9X8 mm

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

Natural Loose Gemstones Starting at $50

Fantasy Jewelry

Starts on:

Muscat, Muscat, AE

5 days Left

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:

Cincinnati, OH, US

Rocki Gorman Sterling Silver Multi-Strand Cross Necklace 179.75g

Turquoise Sterling Silver Concho Belt on New Leather 12 Conchos 313.25g

Robert Johnson Navajo Turquoise Cuff

SILVER, STONE & STORY

Kahu Paws Trading LLC

Starts on:

Santa Fe, NM, US

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