Opal

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1.85ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 80FX: 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 12x7x4mm. The black smoke treatment deepens

2026

1.85ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 80FX

Sathorn, Bangkok

ThousandPlanet

4.5

(318)

2.10ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 63FX: 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

2.10ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 63FX

Sathorn, Bangkok

ThousandPlanet

4.5

(318)

1.94ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 35FX: 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 9x4mm. The black smoke treatment deepens the

2026

1.94ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 35FX

Sathorn, Bangkok

ThousandPlanet

4.5

(318)

2.96ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 66BY: 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 13x8x6mm. The black smoke treatment deepens

2026

2.96ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 66BY

Sathorn, Bangkok

ThousandPlanet

4.5

(318)

2.26ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 60FX: 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

2.26ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 60FX

Sathorn, Bangkok

ThousandPlanet

4.5

(318)

2.70ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 33FX: 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

2.70ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 33FX

Sathorn, Bangkok

ThousandPlanet

4.5

(318)

2.21ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 19FX: 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 11x10x4mm. The black smoke treatment deepens

2026

2.21ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 19FX

Sathorn, Bangkok

ThousandPlanet

4.5

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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

(318)

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24

Opal Auctions

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

4 days Left

18inches Necklace Ruby - 925 Sterling Silver , 1192E

Vintage Glass Marble, Mid-20th Century, 1.5cm, 1077C

1.21ct 50pcs Black Diamond Lot 1.6mm-1.9mm - Natural Diamond, Loose Diamond, 38DD

Collectible Treasure & Gems Hunt Auction #8

Ksmith Heritage Auctioneers

Starts on:

Jelutong,, Penang, MY

5 hrs Left

AAA+ Certified, Quality Sterling Silver-925, Size 7, Lady’s Weeding Ring and Band, Weight 6.8

AAA+ Certified, Quality Sterling Silver-925, Size 7, Lady’s Wedding Ring and Band, Weight 7.1

AAA+ Certified, Quality Sterling Silver-925, Gem Cubic Zirconia, Chain 18??, Weight 4.4 grams,

Our Biggest Jewelry, Gemstone,Diamond Auction

ABC Rugs Kilims, Inc.

Starts on:

Oxnard, CA, US

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