Results for “Black Opal”

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Platinum GIA Certified 1.30ctw Black Opal Diamond Cocktail Ring: Platinum GIA Certified 1.30ctw Black Opal Diamond Cocktail Ring This exquisite vintage cocktail ring features a stunning natural black opal set in solid platinum. The centerpiece is a prong-set caboch

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Platinum GIA Certified 1.30ctw Black Opal Diamond Cocktail Ring

Est.

US$2,249

-

US$2,923

US$100

BidhausNew York, NY

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

Platinum Ladies Ring with 4.02ct Black Opal and 0.72tcw Adjacent Diamonds: Retail: $12,390.00 ****** Platinum Ladies Ring with 4.02ct Black Opal and 0.72tcw Adjacent Diamonds ****** Size: 6.5 (we offer free resizing to winning bidders) / Metal: Platinum / Total Item Weight:

Jul 31, 2026

Platinum Ladies Ring with 4.02ct Black Opal and 0.72tcw Adjacent Diamonds

Est.

US$10,250

-

US$14,550

US$50

Riverside GalleriesArcadia, 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

Jul 24, 2026

14k Yellow Gold Arrowhead Ring with Black Opal and Diamonds

Est.

US$7,631

-

US$9,920

US$100

BidhausNew York, NY

1.98 Ct Natural Black Flashing Fire Opal Oval Cut: Weight - 1.98 Ct / Size - 12.60 x 7.60 x 4.50 mm / Shape - Oval Cut / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

6 hrs Left

1.98 Ct Natural Black Flashing Fire Opal Oval Cut

Est.

US$75

-

US$150

US$8

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

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

2.89 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 2.89 Ct / Size - 14.50 x 10.20 x 3.60 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

3 days Left

2.89 Ct Natural Black Flashing Fire Opal Oval Cab

Est.

US$100

-

US$200

US$7

Gems AuctionBangkok, TH

Platinum 5.50ct GIA Australian Black Opal Diamond Cocktail Ring: Platinum 5.50ct GIA Australian Black Opal Diamond Cocktail Ring This exquisite cocktail ring features a stunning 5.00ct natural Australian oval black opal, beautifully showcased with a play of colors

Jul 23, 2026

Platinum 5.50ct GIA Australian Black Opal Diamond Cocktail Ring

Est.

US$9,477

-

US$12,320

US$100

BidhausNew York, NY

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

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

2.13ct 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

24 hrs Left

2.13ct Oval Cabochon Natural Multicolor Black Opal Gemstone

Est.

US$250

-

US$350

US$150

Weatherham Estate TreasuresCobourg, ON

1.79 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 1.79 Ct / Size - 10.50 x 7.80 x 4.60 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

6 hrs Left

1.79 Ct Natural Black Flashing Fire Opal Oval Cab

Est.

US$75

-

US$150

US$3

Gems AuctionBangkok, TH

Australian black opal 14K white gold ring with 12 diamonds: Australian black opal 14K white gold ring with 12 diamonds This elegant ring features a solid Australian black opal as the centerpiece, measuring 17 x 10 millimeters in an oval cut. The opal is beauti

Jul 22, 2026

Australian black opal 14K white gold ring with 12 diamonds

Est.

US$3,679

-

US$4,782

US$100

Mynt AuctionsNew York, NY

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

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

1.76 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 1.76 Ct / Size - 12.90 x 7.50 x 3.70 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

6 hrs Left

1.76 Ct Natural Black Flashing Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

Jul 24, 2026

JEWELRY BLACK OPAL DIAMOND NECKLACE 18KWG

Est.

US$5,775

-

US$8,470

US$25

NY Elizabeth Beverly Hills, CA

1.70 Ct Natural Black Flashing Fire Opal Octagon Cut: Weight - 1.70 Ct / Size - 10.60 x 8.70 x 3.70 mm / Shape - Octagon Cut / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

6 hrs Left

1.70 Ct Natural Black Flashing Fire Opal Octagon Cut

Est.

US$75

-

US$150

US$5

Gems AuctionBangkok, TH

1.60 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 1.60 Ct / Size - 11.80 x 6.70 x 4.30 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

6 hrs Left

1.60 Ct Natural Black Flashing Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

Jul 26, 2026

PT900 BLACK OPAL DIAMOND RING

Est.

US$6,375

-

US$9,350

US$25

NY Elizabeth Beverly Hills, CA

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

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Platinum 1.39ct Diamond and Black Opal Ring

US$5,000

Eastern European Art Gallery IncBroomall, PA

1.59 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 1.59 Ct / Size - 10.30 x 7.30 x 4.70 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

6 hrs Left

1.59 Ct Natural Black Flashing Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Gems AuctionBangkok, TH

1.76 Ct Natural Black Flashing Fire Opal Pear Cut: Weight - 1.76 Ct / Size - 12.00 x 8.50 x 5.00 mm / Shape - Pear Cut / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

6 hrs Left

1.76 Ct Natural Black Flashing Fire Opal Pear Cut

Est.

US$75

-

US$150

US$8

Gems AuctionBangkok, TH

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