Results for “Black Opal”

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Platinum 0.40ct Diamond and Australian Black Opal Ring: A breathtaking 2.7 carat Australian Black Opal makes a statement at the center of this luxury ring. At the sides piece’s simple Platinum setting, Diamonds with a total weight of 0.40 carats provide

7 days Left

Platinum 0.40ct Diamond and Australian Black Opal Ring

Est.

US$2,300

-

US$2,600

US$1

Eastern European Art Gallery IncBroomall, PA

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

2 days Left

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

Est.

US$20

-

US$200

US$20

ThousandPlanetSathorn, Bangkok

2.48ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 73AK: 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 13.4x7.8x5.1mm. The black smoke treatment de

2 days Left

2.48ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 73AK

Est.

US$20

-

US$200

US$20

ThousandPlanetSathorn, Bangkok

2.53ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 89AK: 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 12.7x9.1x5.2mm. The black smoke treatment de

2 days Left

2.53ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 89AK

Est.

US$20

-

US$200

US$20

ThousandPlanetSathorn, Bangkok

2.18ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 63AK: 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 10.8x8.3x4.6mm. The black smoke treatment de

2 days Left

2.18ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 63AK

Est.

US$20

-

US$200

US$20

ThousandPlanetSathorn, Bangkok

BAGLEY & HOTCHKISS 18K YELLOW GOLD BLACK OPAL INLAY & DIAMOND RING 12.5G: BAGLEY & HOTCHKISS 18K YELLOW GOLD BLACK OPAL INLAY & DIAMOND RING 12.5G Bagley & Hotchkiss 18K Yellow Gold Black Opal Inlay & Diamond Ring 12.5g Ring Size: 5.75 - Can Be Resized Metal: 18k Yellow Gol

2026

BAGLEY & HOTCHKISS 18K YELLOW GOLD BLACK OPAL INLAY & DIAMOND RING 12.5G

Modern JewelryValley Village, CA

14k Yellow Gold Arrowhead Ring with Black Opal and Diamonds: 14k Yellow Gold Arrowhead Ring with Black Opal and Diamonds This stunning cocktail ring showcases a striking 14k yellow gold design, featuring a large natural black opal cut in a unique arrowhead shap

16 hrs Left

14k Yellow Gold Arrowhead Ring with Black Opal and Diamonds

Est.

US$12,679

-

US$15,341

US$5,800

Diamond DepotNew 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 magic

3 days Left

6.27 ct Trillion Cabochon Midnight Starry Night Black Opal Gemstone

Est.

US$250

-

US$400

US$180

Weatherham Estate TreasuresCobourg, ON

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

2 days Left

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

Est.

US$20

-

US$200

US$20

ThousandPlanetSathorn, Bangkok

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

23 hrs Left

Cosmic Fire Black Opal Oval Cabochon

Est.

US$450

-

US$600

US$300

Weatherham Estate TreasuresCobourg, ON

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

7 days Left

GIA Platinum Black Opal Diamond Cocktail Ring Size 7.5

Est.

US$8,078

-

US$9,774

US$2,350

Diamond DepotNew York, NY

2.75ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 35FL: 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 11.2x8.9x5.6mm. The black smoke treatment de

2 days Left

2.75ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 35FL

Est.

US$20

-

US$200

US$20

ThousandPlanetSathorn, Bangkok

2.28ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 36FL: 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 10.9x8.8x5.3mm. The black smoke treatment de

2 days Left

2.28ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 36FL

Est.

US$20

-

US$200

US$20

ThousandPlanetSathorn, Bangkok

GIA Platinum Black Opal Diamond Cocktail Ring Size 6.5: GIA Platinum Black Opal Diamond Cocktail Ring Size 6.5 This platinum cocktail ring features a striking natural black opal, certified by GIA, weighing 2.34 carats in an oval double cabochon cut. The op

2 hrs Left

GIA Platinum Black Opal Diamond Cocktail Ring Size 6.5

Est.

US$4,862

-

US$6,320

US$3,700

BidhausNew York, NY

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

2 days Left

2.82ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 72AK

Est.

US$20

-

US$200

US$20

ThousandPlanetSathorn, Bangkok

2.02ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 46FL: 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 11.8x8.8x4.2mm. The black smoke treatment de

2 days Left

2.02ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 46FL

Est.

US$20

-

US$200

US$20

ThousandPlanetSathorn, Bangkok

Beautiful Natural 7.66Ct Black Opal Ring With Natural Black Diamonds and 18k Gold: Title: Beautiful Natural 7.66Ct Black Opal Ring With Natural Black Diamonds and 18k Gold Description: Beautiful Natural 7.66Ct Black Opal Ring With Natural Black Diamonds and 18k Gold Descripti

Ends in 10d 18h

Beautiful Natural 7.66Ct Black Opal Ring With Natural Black Diamonds and 18k Gold

Est. —

£700

William GeorgeBedfordshire

2.28ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 32FL: 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 11.1x8.6x5.5mm. The black smoke treatment de

2 days Left

2.28ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 32FL

Est.

US$20

-

US$200

US$20

ThousandPlanetSathorn, Bangkok

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

2 days Left

2.45 ct Pear Multicolor Black Opal

Est.

US$300

-

US$400

US$160

Weatherham Estate TreasuresCobourg, ON

3.52 ct Oval Cut Faceted Celestial Galactic Black Opal Gemstone: 3.52 ct Oval Cut Faceted Celestial Galactic Black Opal Gemstone Embark on a cosmic journey with the Oval Cut Faceted Celestial Galactic Opal Gemstone-a mesmerizing celestial treasure that encapsulates

Jul 30, 2026

3.52 ct Oval Cut Faceted Celestial Galactic Black Opal Gemstone

Est.

US$320

-

US$520

US$120

Weatherham Estate TreasuresCobourg, ON

22.5ct Oval Cut Cabochon Bright Iridescence Multicolor Black Opal Gemstone: 22.5ct Oval Cut Cabochon Bright Iridescence Multicolor Black Opal Gemstone Introducing our extraordinary 22.5ct Oval Cut Cabochon Bright Iridescence Multicolor Black Opal Gemstone - a mesmerizing kale

Jul 30, 2026

22.5ct Oval Cut Cabochon Bright Iridescence Multicolor Black Opal Gemstone

Est.

US$1,500

-

US$1,700

US$1,300

Weatherham Estate TreasuresCobourg, ON

GIA Certified Platinum Black Opal Diamond Cluster Ring Size 6.5: GIA Certified Platinum Black Opal Diamond Cluster Ring Size 6.5 This platinum cocktail ring features a vibrant Australian black opal, certified by GIA, set in a cluster spray design. The centerpiece i

3 days Left

GIA Certified Platinum Black Opal Diamond Cluster Ring Size 6.5

Est.

US$11,253

-

US$13,616

US$5,200

Diamond DepotNew York, NY

14K Yellow Gold Adjustable Black Opal Pendant Necklace 1.42ct: 14K Yellow Gold Adjustable Black Opal Pendant Necklace 1.42ct This stunning pendant necklace features a natural black opal, elegantly set in solid 14k yellow gold. The opal is an elongated oval caboch

2 days Left

14K Yellow Gold Adjustable Black Opal Pendant Necklace 1.42ct

Est.

US$2,872

-

US$3,476

US$870

Diamond DepotNew York, NY

VINTAGE 10K GOLD RING, NATURAL OPAL AND BLACK PORCELAIN INLAY ( SIZE: 6 ) 11.3G: VINTAGE WOMEN'S 10K YELLOW GOLD RING WITH NATURAL OPAL AND BLACK PORCELAIN INLAY Vintage Women's 10k Yellow Gold Ring with Natural Opal and Black Porcelain Inlay You are bidding on a pre-owned Vintage

Aug 2, 2026

VINTAGE 10K GOLD RING, NATURAL OPAL AND BLACK PORCELAIN INLAY ( SIZE: 6 ) 11.3G

Est.

US$2,039

-

US$2,279

US$1,675

Modern JewelryValley Village, CA

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