Results for “Black Opal”

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Pt900 Black Opal Diamond Ring: Type: Ring Metal:Platinum Diamond:1.65ct Size:6(US) Signed By: N/A

Jul 28, 2026

Pt900 Black Opal Diamond Ring

Est.

US$3,200

-

US$6,600

US$3,150

Koufuku.co LimitedKowloon, HK

Pt900 Black Opal Diamond Ring: Type: Ring Metal:Platinum Black Opal:3.47ct Diamond:1.16ct Size:6(US) Signed By: N/A

Jul 28, 2026

Pt900 Black Opal Diamond Ring

Est.

US$1,800

-

US$1,900

US$900

Koufuku.co LimitedKowloon, HK

PLATINUM 1.39CT DIAMOND AND BLACK OPAL RING: A vibrant 5.83 carat black opal emits a rainbow of colors at the center of this captivating ring. This visually stunning piece is further elevated by sparkling diamond accents that together possess a

5 days Left

PLATINUM 1.39CT DIAMOND AND BLACK OPAL RING

Est.

US$3,300

-

US$13,200

US$3,200

Robinhood AuctionsLas Vegas, NV

20.10 Ct Natural Black Flashing Fire Opal Pear Cab: Weight - 20.10 Ct / Dimensions - 24.00 x 20.50 x 8.70 mm / Shape - Pear Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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20.10 Ct Natural Black Flashing Fire Opal Pear Cab

US$460

Gems AuctionBangkok, TH

AAA+ Certified Natural Ethiopian 1 Piece Semicircle Shaped Blue-Black Opal Gemstone, Weight: 17 ct,: AAA+ Certified Natural Ethiopian 1 Piece Semicircle Shaped Blue-Black Opal Gemstone, Weight: 17 ct, Gem80

7 hrs Left

AAA+ Certified Natural Ethiopian 1 Piece Semicircle Shaped Blue-Black Opal Gemstone, Weight: 17 ct,

Est.

US$1,200

-

US$1,800

US$50

ABC Rugs Kilims, Inc.Oxnard, CA

Natural Rainbow Fire Red Black Opal Gemstones 1.89 Ct. Oval Cabochon Shape 11.6 x 9.2 Mm.: Product ID: 818724536 Product Name: Natural Opal Weight: 1.89 CT. Size: 11.6 x 9.2 x 3.7 MM. Shape: Oval Cabochon Color: Rainbow Fire Red Black Clarity:Opaque Luster: Iridescent Gems Origin: Ethiopia

5 days Left

Natural Rainbow Fire Red Black Opal Gemstones 1.89 Ct. Oval Cabochon Shape 11.6 x 9.2 Mm.

Est.

US$106

-

US$166

US$1

Treasure of Gems & JewelryLake Charles, LA

12.46 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 12.46 Ct / Dimensions - 25.00 x 14.20 x 7.10 mm / Shape - Oval Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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12.46 Ct Natural Black Flashing Fire Opal Oval Cab

US$280

Gems AuctionBangkok, TH

22.29 Ct Natural Black Flash Fire Opal Pear Cab: Weight - 22.29 Ct / Dimensions - 22.00 x 20.60 x 10.30 mm / Shape - Pear Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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22.29 Ct Natural Black Flash Fire Opal Pear Cab

US$470

Gems AuctionBangkok, TH

2.26ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 89WP: 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 10.5x8.4x4.9mm. The black smoke treatment de

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2.26ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 89WP

Est.

US$25

-

US$200

US$25

Lazo HeritageSathorn, Bangkok

2.50ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 83WP: 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 12.1x8.7x4.6mm. The black smoke treatment de

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2.50ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 83WP

Est.

US$25

-

US$200

US$25

Lazo HeritageSathorn, Bangkok

Natural Fire Red Black Opal Gemstones 1.51 Ct. Oval Cabochon Shape 10.6 x 8 Mm.: Product ID: 818724611 Product Name: Natural Opal Weight: 1.51 CT. Size: 10.6 x 8 x 4 MM. Shape: Oval Cabochon Color: Rainbow Fire Red Black Clarity:Semi - Transparent Luster: Iridescent Gems Origin: E

5 days Left

Natural Fire Red Black Opal Gemstones 1.51 Ct. Oval Cabochon Shape 10.6 x 8 Mm.

Est.

US$86

-

US$136

US$1

Treasure of Gems & JewelryLake Charles, LA

Antique 14K Yellow Gold Large Black Opal Brooch with Diamonds and Emeralds: Antique 14K Yellow Gold Large Black Opal Brooch with Diamonds and Emeralds Crafted in glowing 14K yellow gold, this elegant vintage brooch features a lustrous opal center that shimmers with iridescent

7 days Left

Antique 14K Yellow Gold Large Black Opal Brooch with Diamonds and Emeralds

Est.

US$9,000

-

US$10,000

US$5

Eastern European Art Gallery IncBroomall, PA

21.90 Ct Natural Black Flashing Fire "Shadowfire" Opal Oval Cab: Weight - 21.90 Ct / Dimensions - 25.00 x 15.10 x 11.40 mm / Shape - OVal Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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21.90 Ct Natural Black Flashing Fire "Shadowfire" Opal Oval Cab

US$470

Gems AuctionBangkok, TH

29.01 Ct Natural Black Flashing Fire "Starlit Flame" Opal Oval Cab: Weight - 29.01 Ct / Dimensions - 28.00 x 18.00 x 12.10 mm / Shape - Oval Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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29.01 Ct Natural Black Flashing Fire "Starlit Flame" Opal Oval Cab

US$620

Gems AuctionBangkok, TH

16.11 Ct Natural Black Flashing Fire Opal Round Beads: Weight - 16.11 Ct / Dimensions - 7.80 - 9.40 mm / 8 Pc's / Shape - Round Beads / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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16.11 Ct Natural Black Flashing Fire Opal Round Beads

US$46

Gems AuctionBangkok, TH

Antique 14K Yellow Gold Large Black Opal Brooch with Diamonds and Emeralds: Antique 14K Yellow Gold Large Black Opal Brooch with Diamonds and Emeralds Crafted in glowing 14K yellow gold, this elegant vintage brooch features a lustrous opal center that shimmers with iridescent

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Antique 14K Yellow Gold Large Black Opal Brooch with Diamonds and Emeralds

US$9,000

Eastern European Art Gallery IncBroomall, PA

Antique 14K Yellow Gold Large Black Opal Brooch with Diamonds and Emeralds: Antique 14K Yellow Gold Large Black Opal Brooch with Diamonds and Emeralds Crafted in glowing 14K yellow gold, this elegant vintage brooch features a lustrous opal center that shimmers with iridescent

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Antique 14K Yellow Gold Large Black Opal Brooch with Diamonds and Emeralds

US$9,000

Eastern European Art Gallery IncBroomall, PA

29.62 Ct Natural Black Flashing Fire "Night Blaze" Opal Oval Cab: Weight - 29.62 Ct / Dimensions - 30.50 x 18.00 x 11.20 mm / Shape - Oval Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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29.62 Ct Natural Black Flashing Fire "Night Blaze" Opal Oval Cab

US$620

Gems AuctionBangkok, TH

17.60 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 17.60 Ct / Dimensions -25.00 x 18.00 x 8.80 mm / Shape - Oval Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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17.60 Ct Natural Black Flashing Fire Opal Oval Cab

US$150

Gems AuctionBangkok, TH

21.46 Ct Natural Black Flashing Fire "Eclipse Flame" Opal Pear Cab: Weight - 21.46 Ct / Dimensions - 22.00 x 21.30 x 9.50 mm / Shape - Pear Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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21.46 Ct Natural Black Flashing Fire "Eclipse Flame" Opal Pear Cab

US$470

Gems AuctionBangkok, TH

AAA+ Certified Natural Ethiopian 1 Piece Pear Shaped Black Opal Gemstone, Weight: 5.66, Gem118: AAA+ Certified Natural Ethiopian 1 Piece Pear Shaped Black Opal Gemstone, Weight: 5.66, Gem118

7 hrs Left

AAA+ Certified Natural Ethiopian 1 Piece Pear Shaped Black Opal Gemstone, Weight: 5.66, Gem118

Est.

US$1,200

-

US$1,800

US$50

ABC Rugs Kilims, Inc.Oxnard, CA

Unusual black opal and 70pts diamond 3 stone ring in 18ct yellow gold and platinum: Unusual black opal and 70pts diamond 3 stone ring in 18ct yellow gold and platinum A beautiful .70pts diamond complimented either side by the brightest, most colourful opal stones!

Unusual black opal and 70pts diamond 3 stone ring in 18ct yellow gold and platinum

Est.

£800

-

£850

£500

Banks Jewellery Auctions Gloucestershire

2.21 Carats Natural Ethiopian Welo Black Smoked Opal Loose Gemstone, 59WJ: This natural Ethiopian Welo black smoked opal carries dimension measurements of 11.1x9.3x5.2mm, sourced from Ethiopia's Welo opal deposits famous for dark base opal varieties that amplify vivid shifti

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2.21 Carats Natural Ethiopian Welo Black Smoked Opal Loose Gemstone, 59WJ

Est.

US$10

-

US$200

US$10

Lazo HeritageSathorn, Bangkok

Platinum 0.54ct Diamond and Black Opal Ring: Rare and distinct, this piece features a 4.65-carat black opal carrying blue and green flashes across a dark base. It is set high on a 2mm platinum band and held by four slim claw prongs that leave th

7 days Left

Platinum 0.54ct Diamond and Black Opal Ring

Est.

US$5,000

-

US$6,000

US$1

Eastern European Art Gallery IncBroomall, PA

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