Results for “Black Opal Gemstone”

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Vintage 14k Yellow Gold Black Opal Cufflinks Natural Gemstones: Vintage 14k Yellow Gold Black Opal Cufflinks Natural Gemstones Elevate your style with these vintage cufflinks, expertly crafted from 14k solid yellow gold. Each cufflink features a stunning natural b

3 days Left

Vintage 14k Yellow Gold Black Opal Cufflinks Natural Gemstones

Est. $2,821-$3,667

$100

BidhausNew York, NY

6.27 ct Trillion Cabochon Midnight Starry Night Black Opal Gemstone: 6.27 ct Trillion Cabochon Midnight Starry Night Black Opal Gemstone Introducing the ethereal Trillion Cabochon Midnight Starry Night Black Opal Gemstone—a true masterpiece that encapsulates the magi

4 days Left

6.27 ct Trillion Cabochon Midnight Starry Night Black Opal Gemstone

Est. $250-$400

$180

Weatherham Estate TreasuresCobourg, ON

4.32ct Multicolor Black Oval Opal Gemstone: 4.32ct Multicolor Black Oval Opal Gemstone Type: Black Opal Size: 15.7 x 11.6mm Colour: Multicolor Treatment: Smoked Clarity: Opaque Origin: Ethiopia Mohs Hardness: 5.5- 6.5 View

4 days Left

4.32ct Multicolor Black Oval Opal Gemstone

Est. $275-$350

$185

Weatherham Estate TreasuresCobourg, ON

11.33ct Marquise Cabochon Natural Multicolor Black Opal Gemstone: 11.33ct Marquise Cabochon Natural Multicolor Black Opal Gemstone This 11.33ct natural black opal from Ethiopia displays a vivid multicolor play-of-color over a deep, smoky base. Cut in a striking marq

May 20, 2026

11.33ct Marquise Cabochon Natural Multicolor Black Opal Gemstone

Est. $750-$850

$630

Weatherham Estate TreasuresCobourg, ON

Oval Facet Black Opal Gemstone: Oval Facet Black Opal Gemstone This is a mesmerizing piece, showcasing a dark, mysterious base with vibrant flashes of iridescent color. This gemstone is perfect for creating unique, statement jewelry

4 days Left

Oval Facet Black Opal Gemstone

Est. $150-$250

$60

Weatherham Estate TreasuresCobourg, ON

2.13ct Oval Cabochon Natural Multicolor Black Opal Gemstone: 2.13ct Oval Cabochon Natural Multicolor Black Opal Gemstone This 2.13ct natural black opal from Ethiopia features a vivid multicolor play-of-color across a dark base. Expertly cut in an oval cabochon

May 20, 2026

2.13ct Oval Cabochon Natural Multicolor Black Opal Gemstone

Est. $250-$350

$150

Weatherham Estate TreasuresCobourg, ON

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

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

$61

Treasure of Gems & JewelryLake Charles, LA

Natural Play Of Color Rainbow Fire Red Black Opal Gemstones 2.27 Ct. Pear Cabochon Shape 12 x 8.3 Mm: Product ID: 818724298 Product Name: Natural Opal Weight: 2.27 CT. Size: 12 x 8.3 x 5.2 MM. Shape: Pear Cabochon Color: Multi-Color Clarity:Semi - Transparent Luster: Iridescent Gems Origin: Ethiopia T

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Natural Play Of Color Rainbow Fire Red Black Opal Gemstones 2.27 Ct. Pear Cabochon Shape 12 x 8.3 Mm

$72

Treasure of Gems & JewelryLake Charles, LA

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

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

$50

Treasure of Gems & JewelryLake Charles, LA

Natural Play Of Color Rainbow Fire Red Black Opal Gemstones 1.60 Ct. Oval Cabochon Shape 10.9 x 8.4: Product ID: 818725840 Product Name: Natural Opal Weight: 1.60 CT. Size: 10.9 x 8.4 x 4.2 MM. Shape: Oval Cabochon Color: Multi-Color Clarity:Semi - Transparent Luster: Iridescent Gems Origin: Ethiopia

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Natural Play Of Color Rainbow Fire Red Black Opal Gemstones 1.60 Ct. Oval Cabochon Shape 10.9 x 8.4

$49

Treasure of Gems & JewelryLake Charles, LA

Natural Play Of Color Rainbow Fire Red Black Opal Gemstones 1.30 Ct. Oval Cabochon Shape 10.4 x 6.9: Product ID: 818724639 Product Name: Natural Opal Weight: 1.30 CT. Size: 10.4 x 6.9 x 4 MM. Shape: Oval Cabochon Color: Multi-Color Clarity:Semi - Transparent Luster: Iridescent Gems Origin: Ethiopia T

May 24, 2026

Natural Play Of Color Rainbow Fire Red Black Opal Gemstones 1.30 Ct. Oval Cabochon Shape 10.4 x 6.9

Est. $127-$199

$1

Treasure of Gems & JewelryLake Charles, LA

Natural Play Of Color Rainbow Fire Red Black Opal Gemstones 1.96 Ct. Oval Cabochon Shape 10.7 x 7.7: Product ID: 818724314 Product Name: Natural Opal Weight: 1.96 CT. Size: 10.7 x 7.7 x 4.7 MM. Shape: Oval Cabochon Color: Multi-Color Clarity:Semi - Transparent Luster: Iridescent Gems Origin: Ethiopia

May 24, 2026

Natural Play Of Color Rainbow Fire Red Black Opal Gemstones 1.96 Ct. Oval Cabochon Shape 10.7 x 7.7

Est. $182-$287

$1

Treasure of Gems & JewelryLake Charles, LA

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:

May 24, 2026

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

Est. $103-$162

$1

Treasure of Gems & JewelryLake Charles, LA

Natural Play Of Color Rainbow Fire Red Black Opal Gemstones 2.28 Ct. Oval Cabochon Shape 14.3 x 9.8: Product ID: 818724271 Product Name: Natural Opal Weight: 2.28 CT. Size: 14.3 x 9.8 x 3.2 MM. Shape: Oval Cabochon Color: Rainbow Fire Red Black Clarity:Semi - Transparent Luster: Iridescent Gems Origi

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Natural Play Of Color Rainbow Fire Red Black Opal Gemstones 2.28 Ct. Oval Cabochon Shape 14.3 x 9.8

$72

Treasure of Gems & JewelryLake Charles, LA

Vintage 14k Yellow Gold Black Opal Cufflinks Natural Gemstones: Vintage 14k Yellow Gold Black Opal Cufflinks Natural Gemstones Elevate your style with these vintage cufflinks, expertly crafted from 14k solid yellow gold. Each cufflink features a stunning natural b

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Vintage 14k Yellow Gold Black Opal Cufflinks Natural Gemstones

$2,750

BidhausNew York, NY

PLATINUM 2.0CT DIAMOND AND OPAL COCKTAIL RING: Not for the conventional collector, this platinum cocktail ring makes its presence known through its commanding scale and uncommon gemstone character. At the center, a 9.5-carat oval black opal displa

6 days Left

PLATINUM 2.0CT DIAMOND AND OPAL COCKTAIL RING

Est. $4,500-$18,000

$4,500

Robinhood AuctionsLas Vegas, NV

10k Yellow Gold and Gemstone Ring Assortment: 10k Yellow Gold and Gemstone Ring Assortment (4) items including an open setting having an oval cut pale blue sapphire, a trillion cut citrine, an oval cut cabochon black opal as well as a white gold

May 27, 2026

10k Yellow Gold and Gemstone Ring Assortment

Est. $700-$900

$350

Leonard Auction, a division of The Leonard CompanyAddison, IL

Shahla 14k Yellow Gold Black Opal Emerald Aquamarine Diamond Stick Pin: Shahla 14k Yellow Gold Black Opal Emerald Aquamarine Diamond Stick Pin This exquisite stick pin showcases a stunning array of natural gemstones set in luxurious 14k yellow gold. The focal point is a g

3 days Left

Shahla 14k Yellow Gold Black Opal Emerald Aquamarine Diamond Stick Pin

Est. $4,836-$5,440

$1,550

Diamond DepotNew York, NY

Platinum 2.0ct Diamond and Opal Cocktail Ring: Not for the conventional collector, this platinum cocktail ring makes its presence known through its commanding scale and uncommon gemstone character. At the center, a 9.5-carat oval black opal displa

2026

Platinum 2.0ct Diamond and Opal Cocktail Ring

Eastern European Art Gallery IncBroomall, PA

Black Opal Line Tennis Bracelet in 14K Yellow Gold: In 14K Yellow Gold. Contains seven high quality 13x2mm and one 8x2mm Black Opal gemstones with intense play of color with flashes of green and blue. One opal stone has very small crack in it, not noti

10 hrs Left

Black Opal Line Tennis Bracelet in 14K Yellow Gold

Est. $3,327-$4,991

$1,675

Eric's Estate & JewelryPunta Gorda, FL

PLATINUM 2.0CT DIAMOND AND OPAL COCKTAIL RING: Not for the conventional collector, this platinum cocktail ring makes its presence known through its commanding scale and uncommon gemstone character. At the center, a 9.5-carat oval black opal displa

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PLATINUM 2.0CT DIAMOND AND OPAL COCKTAIL RING

$4,500

Robinhood AuctionsLas Vegas, NV

Cosmic Fire Black Opal Oval Cabochon: Cosmic Fire Black Opal Oval Cabochon A gemstone of celestial wonder, this Black Opal features a smooth oval cabochon cut that reveals a breathtaking play of color. Against its deep black base, flashes

May 25, 2026

Cosmic Fire Black Opal Oval Cabochon

Est. $450-$600

$300

Weatherham Estate TreasuresCobourg, ON

2.45 ct Pear Multicolor Black Opal: 2.45 ct Pear Multicolor Black Opal Introducing the Pear Multicolor Black Opal, a striking natural gemstone weighing 2.45 carats. This Ethiopian opal showcases a vibrant play of multicolored hues acros

3 days Left

2.45 ct Pear Multicolor Black Opal

Est. $300-$400

$160

Weatherham Estate TreasuresCobourg, ON

Necklace 18inches Black Opal & Sapphire - 925 Sterling Silver , 721E: ThousandPlanet Auction Subject: Natural Black Opal & Sapphire Origin: Thailand Carat Weight: 2.98g Dimension: Gemstone 6x8mm Type: Necklace

2026

Necklace 18inches Black Opal & Sapphire - 925 Sterling Silver , 721E

ThousandPlanetHunghom, Kowloon, HK

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