Results for “Black Opal”

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2.30ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 38FX: 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 10x7x5mm. The black smoke treatment deepens

2026

2.30ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 38FX

ThousandPlanetSathorn, Bangkok

1.50 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 1.50 Ct / Dimensions - 10.40x 7.70 x 4.00 mm / Shape - Oval Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

7 days Left

1.50 Ct Natural Black Flashing Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

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

ThousandPlanetSathorn, Bangkok

0.74 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 0.74 Ct / Size - 7.80 x 5.80 x 3.30 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

7 days Left

0.74 Ct Natural Black Flashing Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

3.41 Ct Natural Black Flashing Fire Opal Pear Cab Pair: Weight - 3.41 Ct / Dimensions - 11.10 x 7.20 x 4.50 mm / 2 PC's / Shape - Pear Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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3.41 Ct Natural Black Flashing Fire Opal Pear Cab Pair

US$46

Gems AuctionBangkok, TH

Black Opal With Amazing - 1.40 Carats - 10X8X6 mm: Black Opal With Amazing - 1.40 Carats - 10X8X6 mmShipping Rate: FREE SHIPPINGshipping rates are FREE WORLDWIDECombined shipping: We offer combine shipping on multiple items purchased to reduce shippin

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Black Opal With Amazing - 1.40 Carats - 10X8X6 mm

US$90

Fantasy JewelryMuscat, AE

Black Opal With Amazing - 1.40 Carats - 10X8X6 mm: Black Opal With Amazing - 1.40 Carats - 10X8X6 mmShipping Rate: FREE SHIPPINGshipping rates are FREE WORLDWIDECombined shipping: We offer combine shipping on multiple items purchased to reduce shippin

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Black Opal With Amazing - 1.40 Carats - 10X8X6 mm

US$90

Fantasy JewelryMuscat, AE

1.93 Ct Natural Black Flashing Fire Opal Trillion Cut: Weight - 1.93 Ct / Size - 10.10 x 9.70 x 6.00 mm / Shape - Trillion Cut / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

7 days Left

1.93 Ct Natural Black Flashing Fire Opal Trillion Cut

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

0.93 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 0.93 Ct / Dimensions - 9.30 x 5.60 x 3.70 mm / Shape - Oval Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

7 days Left

0.93 Ct Natural Black Flashing Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

1.91 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 1.91 Ct / Size - 10.10 x 7.00 x 5.00 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

7 days Left

1.91 Ct Natural Black Flashing Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

Natural Fire Red Black Opal Gemstones 1.02 Ct. Oval Cabochon Shape 10.2 x 7.7 Mm.: Product ID: 818724703 Product Name: Natural Opal Weight: 1.02 CT. Size: 10.2 x 7.7 x 3 MM. Shape: Oval Cabochon Color: Rainbow Fire Red Black Clarity:Semi - Transparent Luster: Iridescent Gems Origin:

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Natural Fire Red Black Opal Gemstones 1.02 Ct. Oval Cabochon Shape 10.2 x 7.7 Mm.

US$21

Treasure of Gems & JewelryLake Charles, LA

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

ThousandPlanetSathorn, Bangkok

1.48 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 1.48 Ct / Dimensions - 10.80 x 7.60 x 3.70 mm / Shape - Oval Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

7 days Left

1.48 Ct Natural Black Flashing Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

1.92 Ct Natural Black Flashing Fire Opal Pear Cut: Weight - 1.92 Ct / Size - 12.60 x 7.80 x 5.40 mm / Shape - Pear Cut / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

7 days Left

1.92 Ct Natural Black Flashing Fire Opal Pear Cut

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

Black Fire Opal - 1.95 Carats - 12X8X4 mm: Black Fire Opal - 1.95 Carats - 12X8X4 mmShipping Rate: $15.00 .shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combine shipping on multiple items purchased

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Black Fire Opal - 1.95 Carats - 12X8X4 mm

US$120

Fantasy JewelryMuscat, AE

Natural Red Black Opal Gemstones 2.07 Ct. Oval Cabochon Shape 11.5 x 8.7 Mm.: Product ID: 818724656 Product Name: Natural Opal Weight: 2.07 CT. Size: 11.5 x 8.7 x 4.3 MM. Shape: Oval Cabochon Color: Rainbow Fire Red Black Clarity:Semi - Transparent Luster: Iridescent Gems Origi

Aug 23, 2026

Natural Red Black Opal Gemstones 2.07 Ct. Oval Cabochon Shape 11.5 x 8.7 Mm.

Est.

US$115

-

US$181

US$1

Treasure of Gems & JewelryLake Charles, LA

2.90 Ct Natural Black Flashing Fire Opal Pear Cab: Weight - 2.90 Ct / Dimensions - 13.10 x 10.00 x 4.90 mm / Shape - Pear Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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2.90 Ct Natural Black Flashing Fire Opal Pear Cab

US$43

Gems AuctionBangkok, TH

3.63 Ct Natural Black Fire Opal Pear Cab: Weight - 3.63 Ct / Dimensions -18.10 x 9.00 x 5.30 mm / Shape - Pear Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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3.63 Ct Natural Black Fire Opal Pear Cab

US$49

Gems AuctionBangkok, TH

0.96 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 0.96 Ct / Size - 8.80 x 7.00 x 3.30 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

7 days Left

0.96 Ct Natural Black Flashing Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

2.04 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 2.04 Ct / Size - 11.50 x 7.90 x 5.00 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

7 days Left

2.04 Ct Natural Black Flashing Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

1.77 Ct Natural Black Flashing Fire Opal Pear Cab: Weight - 1.77 Ct / Dimensions - 10.80 x 9.30 x 3.60 mm / Shape - Pear Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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1.77 Ct Natural Black Flashing Fire Opal Pear Cab

US$34

Gems AuctionBangkok, TH

GIA Platinum Black Opal Diamond Cocktail Ring Size 7.5: GIA Platinum Black Opal Diamond Cocktail Ring Size 7.5 This platinum cocktail ring features a large natural black opal as its centerpiece, expertly cut in an oval cabochon shape and weighing 5.22 cara

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GIA Platinum Black Opal Diamond Cocktail Ring Size 7.5

US$4,740

BidhausNew York, NY

1.43 Carats Natural Ethiopian Welo Black Opal Oval Faceted Loose Gemstone, 86XX: This opal is mined from the Welo region of Ethiopia and expertly faceted and polished into an oval shape by professional lapidary techniques. Natural fine internal particles and faint natural fissures

15 hrs Left

1.43 Carats Natural Ethiopian Welo Black Opal Oval Faceted Loose Gemstone, 86XX

Est.

US$10

-

US$200

US$10

Lazo HeritageSathorn, Bangkok

1.90 Ct Natural Black Flashing Fire Opal Oval Cut: Weight - 1.90 Ct / Dimensions - 11.70 x 7.70 x 4.70 mm / Shape - Oval Cut / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

7 days Left

1.90 Ct Natural Black Flashing Fire Opal Oval Cut

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

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