Opal

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120ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 53AX: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

2026

120ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 53AX

ThousandPlanetSathorn, Bangkok

2.29ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 40FL: 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 10.3x8.1x5.5mm. The black smoke treatment de

2026

2.29ct Natural Ethiopian Welo Black Smoked Opal Cabochon Loose Gemstone, 40FL

ThousandPlanetSathorn, Bangkok

20.44 Ct Natural Blue Opal Pear cab: Weight - 20.44 Ct / Dimensions - 34.00 x 19.40 x 5.30 mm / Shape - Pear cab / Clarity - Opaque / Origin - Peru / Treatment - None

2026

20.44 Ct Natural Blue Opal Pear cab

Gems AuctionBangkok, TH

26.66 Ct Natural Blue Opal Oval Cab: Weight - 26.66 Ct / Dimensions - 32.00 x 20.20 x 6.20 mm / Shape - Oval Cab / Clarity - Opaque / Origin - USA / Treatment - None

2026

26.66 Ct Natural Blue Opal Oval Cab

Gems AuctionBangkok, TH

70.62 Ct Natural Dendrite Opal Pear Cab: weight - 70.62 Ct / Dimensions - 46.00 x 38.00 x 6.00 mm / Shape & Cut - Excellent Pear Cab / Origin - Brazil / Comments - None

2026

70.62 Ct Natural Dendrite Opal Pear Cab

Gems AuctionBangkok, TH

2.35 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 2.35 Ct / Size - 11.90 x 8.40 x 4.90 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

2026

2.35 Ct Natural Black Flashing Fire Opal Oval Cab

Gems AuctionBangkok, TH

40.90 Ct Natural Dendrite Opal Pear Cab: weight - 40.90 Ct / Dimensions - 35.00 x 25.40 x 6.70 mm / Shape & Cut - Excellent Pear Cab / Origin - Brazil / Comments - None

2026

40.90 Ct Natural Dendrite Opal Pear Cab

Gems AuctionBangkok, TH

32.72 Ct Natural Blue Opal Cushion Cab: weight - 32.72 Ct / Size - 29.00 x 24.50 x 5.50 mm / Shape - Excellent Cushion Cab / Origin - Brazil / Treatment - None

2026

32.72 Ct Natural Blue Opal Cushion Cab

Gems AuctionBangkok, TH

24.07 Ct Natural Blue Opal Round cab: Weight - 24.07 Ct / Dimensions - 25.20 x 25.20 x 5.90 mm / Shape - Round cab / Clarity - Opaque / Origin - Peru / Treatment - None

2026

24.07 Ct Natural Blue Opal Round cab

Gems AuctionBangkok, TH

17.11 Ct Natural Dendrite Opal OVal Cab: weight - 17.11 Ct / Dimensions - 23.10 x 18.60 x 5.80 mm / Shape & Cut - Excellent OVal Cab / Origin - Brazil / Comments - None

2026

17.11 Ct Natural Dendrite Opal OVal Cab

Gems AuctionBangkok, TH

72.68 Ct Natural Dendrite Opal JUMBO OVal Cab: weight - 72.68 Ct / Dimensions - 50.00 x 34.00 x 5.70 mm / Shape & Cut - Excellent OVal Cab / Origin - Brazil / Comments - None

2026

72.68 Ct Natural Dendrite Opal JUMBO OVal Cab

Gems AuctionBangkok, TH

53.96 Ct Natural Dendrite Opal Pear Cab: weight - 53.96 Ct / Dimensions - 38.00 x 34.00 x 6.40 mm / Shape & Cut - Excellent Pear Cab / Origin - Brazil / Comments - None

2026

53.96 Ct Natural Dendrite Opal Pear Cab

Gems AuctionBangkok, TH

41.97 Ct Natural Dendrite Opal OVal Cab: weight - 22.92 Ct / Dimensions - 34.00 x 27.00 x 6.50 mm / Shape & Cut - Excellent OVal Cab / Origin - Brazil / Comments - None

2026

41.97 Ct Natural Dendrite Opal OVal Cab

Gems AuctionBangkok, TH

56.19 Ct Natural Dendrite Opal Round Drilled Cab: weight - 56.19 Ct / Dimensions - 39.00 x 39.00 x 6.10 mm / Shape & Cut - Excellent Round Cab / Origin - Brazil / Comments - None

2026

56.19 Ct Natural Dendrite Opal Round Drilled Cab

Gems AuctionBangkok, TH

5.56 Ct Natural Pink Fire Opal Round Beads: Weight - 5.56 Ct / Dimensions - 4.60 - 4.90 mm / 20 Pc's / Shape - Round Beads / Color - Pink / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Heated

2026

5.56 Ct Natural Pink Fire Opal Round Beads

Gems AuctionBangkok, TH

29.45 Ct Natural Green Opal OVal Cab: weight - 29.45 Ct / Size - 38.00 x 22.80 x 5.10 mm / Shape - Excellent OVal Cab / Origin - Brazil / Treatment - None

2026

29.45 Ct Natural Green Opal OVal Cab

Gems AuctionBangkok, TH

43.08 Ct Natural Dendrite Opal Fancy Cab: weight - 43.08 Ct / Dimensions - 40.00 x 27.00 x 5.70 mm / Shape & Cut - Excellent Fancy Cab / Origin - Brazil / Comments - None

2026

43.08 Ct Natural Dendrite Opal Fancy Cab

Gems AuctionBangkok, TH

2.84 Ct Natural Black Flashing Fire Opal Pear Cab: Weight - 2.84 Ct / Size - 11.30 x 9.50 x 5.30 mm / Shape - Pear Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

2026

2.84 Ct Natural Black Flashing Fire Opal Pear Cab

Gems AuctionBangkok, TH

39.63 Ct Natural Dendrite Opal Art OVal Cab: weight - 39.63 Ct / Dimensions - 40.00 x 27.00 x 6.00 mm / Shape & Cut - Excellent OVal Cab / Origin - Brazil / Comments - None

2026

39.63 Ct Natural Dendrite Opal Art OVal Cab

Gems AuctionBangkok, TH

8.67 Ct Natural Multicolor Fire Opal Round Beads: Weight - 8.67 Ct / Dimensions - 5.10- 5.80 mm / 20 Pc's / Shape - Round Beads / Color - Pink & Blue / Clarity - Translucent / Origin - Ethiopia / Treatment - Heated

2026

8.67 Ct Natural Multicolor Fire Opal Round Beads

Gems AuctionBangkok, TH

3.82 Ct Natural Pink Fire Opal Round Beads: Weight - 3.81 Ct / Size - 4.60 - 4.90 mm / 14 Pc's / Shape - Round Beads / Clarity - Transparent / Origin - Ethiopia / Treatment - Heated

2026

3.82 Ct Natural Pink Fire Opal Round Beads

Gems AuctionBangkok, TH

5.56 Ct Natural Blue FIre Opal Round Beads: Weight - 5.56 Ct / Dimensions - 4.60 - 5.00 mm / 14 Pc's / Shape & Cut - Drilled Round Beads / Color - Blue / Transparency - Translucent / Origin - Ethiopia / Comments -None

2026

5.56 Ct Natural Blue FIre Opal Round Beads

Gems AuctionBangkok, TH

2.93 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 2.93 Ct / Size - 12.80 x 10.50 x 4.90 mm / Shape - Oval Cab / Color - Black / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Smoked

2026

2.93 Ct Natural Black Flashing Fire Opal Oval Cab

Gems AuctionBangkok, TH

3.93 Ct Natural Pink Fire Opal Round Beads: Weight - 3.93 Ct / Size - 4.50 - 4.90 mm / 14 Pc's / Shape - Round Beads / Clarity - Transparent / Origin - Ethiopia / Treatment - Heated

2026

3.93 Ct Natural Pink Fire Opal Round Beads

Gems AuctionBangkok, TH

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24

Opal Auctions

1.97Ct Welo Black Faceted Opal Polished - Ethiopian Opal , 445E

29.90Ct Moss Agate Cabochon - Polished - 31x21mm Approx , 320E

Australian Lightning Ridge Crystal Black Opal Rough Chip Jar (Good For Display), 344B

The Aurora Treasury Gems & Jewels #3

Ksmith Heritage Auctioneers

Starts on:

Jelutong, Penang, MY

3 days Left

6.40 Cts Natural amethyst Gemstone - 12X10.5X8 mm

1.25 Carats Deep Blue Natural Aquamarine Loose Gemstone - 9X6X4 mm

Baby Pink Top quality Natural Kunzite loose Gemstone - 3.25 Carats - 9X8.5X6 mm

NO RESERVE Loose Gemstones

Fantasy Jewelry

Starts on:

Muscat, Muscat, AE

3 days Left

Impressive Mid Century Viking Epic Stockholm Smoke Pine Gray Lotus Wayne Husted Art Glass Vase

GIVENCHY Vintage Designer Matte Silver G Cutout Necklace, Bracelet & Pierced Earrings Ensemble

Vintage Jewelry, Early Christmas & Unusual

Atlee Raber Auctions

Starts on:

Dundee, OH, US

4 days Left

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