Results for “Opal Rocks”

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32.45ct Oval Cabochon Moss Green Cat's Eye Opal Gemstone: 32.45ct Oval Cabochon Moss Green Cat's Eye Opal Gemstone Introducing the Oval Cabochon Moss Green Cat's Eye Opal Gemstone—a celestial marvel that captures the mysterious allure of moonlit m

3 days Left

32.45ct Oval Cabochon Moss Green Cat's Eye Opal Gemstone

Weatherham Estate Treasures

Est. US$320-US$520

2.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL: 2.95ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Australia 2.95ct Measures 13.2mm x 8.8mm Polished cabochon Beautiful color play, blue and greens

Mar 01, 2026

2.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Est. US$206-US$275

1.06ct EXCELLENT CUSHION CABOCHON CUT NATURAL UNTREATED OPAL: 1.06ct EXCELLENT CUSHION CABOCHON CUT NATURAL UNTREATED OPAL LOOSE NATURAL UNTREATED CUSHION CABOCHON WHITE OPAL Opal measures 6.5x6.5mm Natural untreated White Opal New 1.06ct

3 days Left

1.06ct EXCELLENT CUSHION CABOCHON CUT NATURAL UNTREATED OPAL

Est. US$74-US$92

5.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL: 5.95ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Australia5.95ct Measures 17.2mm x 10.9mm

Mar 01, 2026

5.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Est. US$275-US$412

12.30ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL: 12.30ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Koroit Australia12.30ct Measures 24.45mm x 12.71mm x 4.78mm Polished cabochon

Mar 01, 2026

12.30ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Est. US$206-US$343

Natural White Color Opal 8.93 Ct. Oval Cabochon Shape 19.8 x 12.5 Mm. Natural Unheated Gemstone From: Product ID: 818709412 Product Name: Natural Opal Weight: 8.93 CT. Size: 19.8 x 12.5 x 6.9 MM. Shape: Oval Cabochon Color: White Clarity:Semi - Transparent Luster: Good Gems Origin: Ethiopia Treatment:

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Natural White Color Opal 8.93 Ct. Oval Cabochon Shape 19.8 x 12.5 Mm. Natural Unheated Gemstone From

Treasure of Gems & Jewelry

10.46ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL: 10.46ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Australia10.46ct Measures 16.5mm x 9.8mm Polished cabochon, beautiful

Mar 01, 2026

10.46ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Est. US$206-US$275

5mm NATURAL UNTREATED WHITE MULTI COLORED OPAL ROUND: LOOSE NATURAL UNTREATED ROUND CUT CABOCHON OPALSale is for 1 round cut cabochon opalOpal measures 5mm If you purchase 2 and want matching pair please let me know,(obviously colors won't match exactly)

Mar 01, 2026

5mm NATURAL UNTREATED WHITE MULTI COLORED OPAL ROUND

Est. US$275-US$412

Natural Multi Color Opal 18.03 Ct. Dog Carving 23 x 14.9 Mm. Unheated Gemstone From Australia: Product ID: 818722515 Product Name: Natural Opal Carving Weight: 18.03 CT. Size: 23 x 14.9 x 10.8 MM. Shape: Dog Carving Color: Multi Color Clarity:Semi - Transparent Luster: Strong Iridescent Gems Or

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Natural Multi Color Opal 18.03 Ct. Dog Carving 23 x 14.9 Mm. Unheated Gemstone From Australia

Treasure of Gems & Jewelry

0.83 ct Natural Fire Orange Fire Opal, Oval Facet, Transparent, Mexico: 0.83 ct Natural Fire Orange Fire Opal, Oval Facet, Transparent, Mexico Natural fire opal gemstone weighing 0.83 ct, cut in an oval facet shape with a vibrant fire orange color. The gem measures 8.17 x

Feb 25, 2026

0.83 ct Natural Fire Orange Fire Opal, Oval Facet, Transparent, Mexico

Weatherham Estate Treasures

Est. US$150-US$250

Unpolished Opal Formation: Unpolished opal formation from Brazil. 7" x 5" x 3.5". 4 pounds, 14 ounces.

Feb 22, 2026

Unpolished Opal Formation

Fossils & Gemstones of Houston

Est. US$150-US$200

1.06ct EXCELLENT CUSHION CABOCHON CUT NATURAL UNTREATED OPAL: 1.06ct EXCELLENT CUSHION CABOCHON CUT NATURAL UNTREATED OPAL LOOSE NATURAL UNTREATED CUSHION CABOCHON WHITE OPAL Opal measures 6.5x6.5mm Natural untreated White Opal New 1.06ct

Mar 19, 2026

1.06ct EXCELLENT CUSHION CABOCHON CUT NATURAL UNTREATED OPAL

Est. US$74-US$92

2.81 Ct Natural Black Flashing Fire Opal Oval Cab: Weight - 2.81 Ct / Dimensions - 12.70 x 8.40 x 5.00 mm / Shape - Oval Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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2.81 Ct Natural Black Flashing Fire Opal Oval Cab

7.07 Ct Natural Orange Fire Opal OVal Cab Pair: Weight - 7.07 Ct / Dimensions - 14.10 x 10.00 x 5.90 mm / 2 Pc's / Shape - OVal Cab / Color - Orange / Clarity - Translucent / Origin - Ethiopia / Treatment - Heated

23 hrs Left

7.07 Ct Natural Orange Fire Opal OVal Cab Pair

Est. US$125-US$250

4.76 Ct Natural Blue Fire Opal Pear Cab: Weight - 4.76 Ct / Size - 16.60 x 10.40 x 5.90 mm / Shape - Pear Cab / Color - Blue / Clarity - Translucent / Origin - Ethiopia / Treatment - Heated

23 hrs Left

4.76 Ct Natural Blue Fire Opal Pear Cab

Est. US$100-US$200

4.63 Ct Natural Orange Fire Opal Oval Cab: Weight - 4.63 Ct / Size - 14.60 x 10.80 x 6.20 mm / Shape - Oval Cab / Color - Orange / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Heated

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4.63 Ct Natural Orange Fire Opal Oval Cab

Natural Opal Quartz Heart Restored Mineral Specimen: Natural Opal Quartz Heart Restored Mineral Specimen Weighing 56 grams this heart-shaped specimen features natural opal quartz with delicate translucence and subtle flashes of opalescence. Carefully r

Mar 05, 2026

Natural Opal Quartz Heart Restored Mineral Specimen

Weatherham Estate Treasures

Est. US$120-US$240

23.41 Ct Natural Owyhee Blue Opal Oval Cab: Weight - 23.41 Ct / Dimensions - 30.00 x 20.50 x 5.80 mm / Shape - Oval Cab / Clarity - Translucent / Origin - USA / Treatment - None

2 days Left

23.41 Ct Natural Owyhee Blue Opal Oval Cab

Est. US$75-US$150

23.98 Ct Natural Tibetian Sky Turquoise Oval Pair: Weight - 23.98 Ct / Dimensions - 29.00 x 11.70 x 4.20 mm / 2 Pc's / Shape - Oval Pair / Color - Blue / Clarity - Translucent / Origin - Tibet/ Treatment - None

Feb 25, 2026

23.98 Ct Natural Tibetian Sky Turquoise Oval Pair

Est. US$75-US$150

Large Aquamarine 65.16Ct Natural Blue Santa Maria Aquamarine Smooth Cabochon: Ksmith Jewels Global Welcome to our auction house, today auction brought to you by Ksmith Jewels Global based in Penang, Malaysia specialize in all kinds of opal and color gemstone both in manufacturi

6 days Left

Large Aquamarine 65.16Ct Natural Blue Santa Maria Aquamarine Smooth Cabochon

Ksmith Heritage Auctioneers

Est. US$70-US$1,000

Star Sapphire 13.24Ct Natural Golden Black 6 Rays Gold Star Sapphire: Ksmith Jewels Global Welcome to our auction house, today auction brought to you by Ksmith Jewels Global based in Penang, Malaysia specialize in all kinds of opal and color gemstone both in manufacturi

6 days Left

Star Sapphire 13.24Ct Natural Golden Black 6 Rays Gold Star Sapphire

Ksmith Heritage Auctioneers

Est. US$70-US$1,000

2.30 Ct Natural Blue Fire Opal Pear Cab: Weight - 2.30 Ct / Size - 11.70 x 8.50 x 5.40 mm/ Shape - Pear Cab / Color - Blue / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Heated

23 hrs Left

2.30 Ct Natural Blue Fire Opal Pear Cab

Est. US$75-US$150

15.81 Carats Boulder Opal Rough - Natural Winton - 15.8 x 13.3 x 6.5 mm, 26XK: This striking boulder opal rough from Winton showcases brilliant veins of electric blue and green fire, naturally embedded within its rich brown ironstone matrix. The vivid play-of-color flashes brigh

1 day Left

15.81 Carats Boulder Opal Rough - Natural Winton - 15.8 x 13.3 x 6.5 mm, 26XK

Est. US$30-US$60

Madagascar Moonstone 1.90Ct Natural Flashy Ranbow Madagascar Moonstone for Jewelry: Ksmith Jewels Global Welcome to our auction house, today auction brought to you by Ksmith Jewels Global based in Penang, Malaysia specialize in all kinds of opal and color gemstone both in manufacturi

6 days Left

Madagascar Moonstone 1.90Ct Natural Flashy Ranbow Madagascar Moonstone for Jewelry

Ksmith Heritage Auctioneers

Est. US$70-US$1,000

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