Results for “Opal Rocks”

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Mexican Fire Opal Gemstone Egg: Mexican Fire Opal Gemstone Egg Late 20th Century, Mexico Artist/Designer/Manufacturer: Unknown. Marking(s): None. Materials: Polished gemstone. Cataloger Note: Carved and polished egg-form gemstone fe

Starts in 1 day

Mexican Fire Opal Gemstone Egg

Est.

US$50

-

US$200

US$25

Dania Beach, FL

Akiba Galleries

4.7

(2.1k)

Ortholers Fossil.: From the estate of a 50+ year antique dealer specializing in decorative arts with an emphasis on Opaline glass boxes. Dimensions: Fossil 19" x 15"

Starts in 6 days

Ortholers Fossil.

Est.

US$300

-

US$500

US$150

Larchmont, NY

Clarke Auction Gallery

4.5

(624)

SLAB OREGON OPAL FRAGMENTS: FOUR PIECES OF SLAB OPAL SET IN RHYOLITE JASPER MATRIX. LARGEST 6"X3.5"X5.5"

Starts in 4 days

SLAB OREGON OPAL FRAGMENTS

Est.

US$100

-

US$200

US$30

Sarasota, FL

Freedom Auction Company

4.6

(579)

4.82 Ct Natural Orange Fire Opal Oval Cab: Weight - 4.82 Ct / Size - 12.00 x 11.00 x 6.10 mm / Shape - Oval Cab / Color - Orange / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Heated

Starts in 4 days

4.82 Ct Natural Orange Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

2.03 Ct Natural Orange Fire Opal Oval Cab: Weight - 2.03 Ct / Size - 11.80 x 8.40 x 4.80 mm / Shape - Oval Cab / Color - Orange / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Heated

Starts in 4 days

2.03 Ct Natural Orange Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

4.20 Ct "Play of Colors" Natural Ethiopian Pink Fire Opal: Gemstones: Natural Fire Opal /Carat Weights: 4.20 ct /Size or Dimensions: 15.36 X 12.46 X 5.07 mm /Treatment: Dyed

Oct 5, 2026

4.20 Ct "Play of Colors" Natural Ethiopian Pink Fire Opal

Est.

US$75

-

US$150

US$1

Rajasthan, IN

Finest Gems Auction

4.6

(135)

Estate Collection of Minerals, Gemstones and Related: Estate Collection of Minerals, Gemstones and Related. Geode Rock Specimen Including: Gummite, Jasper, Opal, Agate, Barite, Quartz, Malachite, Gotham Marble, and many more!!! Approx 45 pcs

Starts in 10 hrs

Estate Collection of Minerals, Gemstones and Related

Est.

US$50

-

US$200

US$50

Pine Bush, NY

Flannery's Estate Services

4.6

(486)

29.23 Ct Natural Dendrite Opal Oval Cab: weight - 29.23 Ct / Size - 34.00 x 18.90 x 6.80 mm / Shape - Excellent Oval Cab / Origin - Brazil / Treatment - None

Starts in 2 days

29.23 Ct Natural Dendrite Opal Oval Cab

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

3.13 Ct Natural Ink Blue Fire Opal Oval Cab: Weight - 3.13 Ct / Size - 15.00 x 9.00 x 5.20 mm / Shape - Oval Cab / Color - Blue / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Heated

Starts in 16 hrs

3.13 Ct Natural Ink Blue Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

2.45 Ct Natural Multicolor Welo Opal Flash Fire Round Cab Pair: Weight - 2.45 Ct / Dimensions - 7.20 x 7.20 x 4.20 mm / 2 Pc's / Shape & Cut - Round Cab / Color - Multicolor / Transparency - Translucent / Origin - Ethiopia / Comments - None

Starts in 2 days

2.45 Ct Natural Multicolor Welo Opal Flash Fire Round Cab Pair

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

1.29 Ct Natural Multicolor Welo Opal Round Cab Set: Weight - 1.29 Ct / Dimensions - 4.70 - 4.90 mm / 4 Pc's / Shape & Cut - Round Cab / Color - Multicolor / Transparency - Translucent / Origin - Ethiopia / Comments - None

Starts in 4 days

1.29 Ct Natural Multicolor Welo Opal Round Cab Set

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

4.10 Ct Natural Multicolor Top Fire Opal Solid Rough Cab: Weight - 4.10 Ct / Size - 13.70 x 9.70 x 8.50 mm / Shape - Unshaped Solid Cab / Color - Multicolor / Clarity - Translucent / Origin - Ethiopia / Treatment - None

Starts in 4 days

4.10 Ct Natural Multicolor Top Fire Opal Solid Rough Cab

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

2.01 Ct Natural Multicolor Welo Opal Round Cab Set: Weight - 2.01 Ct / Dimensions - 5.00 - 5.10 mm / 5 Pc's / Shape & Cut - Round cab / Color - Multicolor / Transparency - Translucent / Origin - Ethiopia / Comments - None

Starts in 4 days

2.01 Ct Natural Multicolor Welo Opal Round Cab Set

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

3.39 Ct Natural Ink Blue Fire Opal Oval Cab: Weight - 3.39 Ct / Size - 15.60 x 9.10 x 5.50 mm / Shape - Oval Cab / Color - Blue / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Heated

Starts in 2 days

3.39 Ct Natural Ink Blue Fire Opal Oval Cab

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

2.20 Ct Natural Multicolor Welo Opal Top Fire Drilled Solid Rough: Weight - 2.20 Ct / Size - 14.70 x 10.60 x 6.40 mm / Shape - Solid Rough Cab / Color - Multicolor / Clarity - Translucent / Origin - Ethiopia / Treatment - None

Starts in 4 days

2.20 Ct Natural Multicolor Welo Opal Top Fire Drilled Solid Rough

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

3.57 Ct Natural Ink Blue Fire Opal Oval Cab: Weight - 3.57 Ct / Size - 12.10 x 10.00 x 6.20 mm / Shape - Oval Cab / Color - Blue / Transparency - Translucent / Origin - Ethiopia / Treatment - Color Heated

Starts in 16 hrs

3.57 Ct Natural Ink Blue Fire Opal Oval Cab

Est.

US$75

-

US$150

US$5

Bangkok, TH

Gems Auction

4.7

(494)

16.83 Ct Natural Green Swiss Opal Trillion Cab: Weight - 16.83 Ct / Dimensions - 22.20 x 19.70 x 5.10 mm / Shape - Pear Cab / Clarity - Translucent / Origin - Brazil / Treatment - None

Starts in 4 days

16.83 Ct Natural Green Swiss Opal Trillion Cab

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

4.16 Ct Natural Ethiopian Fire Opal Rough: Gemstones: Natural Fire Opal /Carat Weights: 4.16 ct /Treatment: No

Oct 5, 2026

4.16 Ct Natural Ethiopian Fire Opal Rough

Est.

US$75

-

US$150

US$1

Rajasthan, IN

Finest Gems Auction

4.6

(135)

11.17 Ct Natural Multicolor Welo Opal Flash Fire Pear Cab: Weight - 11.17 Ct / Dimensions - 23.20 x 14.90 x 9.40 mm / Shape & Cut - Pear Cab / Color - Multicolor / Transparency - Translucent / Origin - Ethiopia / Comments - None

Buy Now

11.17 Ct Natural Multicolor Welo Opal Flash Fire Pear Cab

US$220

Bangkok, TH

Gems Auction

4.7

(494)

16.91 Ct Natural Green Swiss Opal Fancy cab: Weight - 16.91 Ct / Dimensions - 28.00 x 14.60 x 5.60 mm / Shape - Fancy Cab / Clarity - Opaque / Origin - Brazil / Treatment - None

Starts in 2 days

16.91 Ct Natural Green Swiss Opal Fancy cab

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

2.05 Ct Natural Multicolor Welo Opal Flash Fire Round Cab Pair: Weight - 2.05 Ct / Dimensions - 7.10 x 7.10 x 3.80 mm / 2 Pc's / Shape & Cut - Round Cab / Color - Multicolor / Transparency - Translucent / Origin - Ethiopia / Comments - None

Starts in 2 days

2.05 Ct Natural Multicolor Welo Opal Flash Fire Round Cab Pair

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

4.21 Ct Natural Multicolor Top Fire Opal Solid Rough Cab: Weight - 4.21 Ct / Dimensions - 14.50 x 11.00 x 6.50 mm / Shape - Unshaped Solid Cab / Color - Multicolor / Clarity - Translucent / Origin - Ethiopia / Treatment - None

Starts in 4 days

4.21 Ct Natural Multicolor Top Fire Opal Solid Rough Cab

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

9.67 Ct Natural Dendrite Opal Round Beads: weight - 9.67 Ct / Dimensions - 6.00 - 6.30 mm / 11 Pc's / Shape & Cut - Excellent Round Beads / Origin - Brazil / Comments - None

Starts in 4 days

9.67 Ct Natural Dendrite Opal Round Beads

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

8.75 Ct Natural Dendrite Opal Round Beads: weight - 8.75 Ct / Dimensions - 5.90 - 6.30 mm / 12 Pc's / Shape & Cut - Excellent Round Beads / Origin - Brazil / Comments - None

Starts in 4 days

8.75 Ct Natural Dendrite Opal Round Beads

Est.

US$75

-

US$150

US$1

Bangkok, TH

Gems Auction

4.7

(494)

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