Results for “Opal Rocks”

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ESTATE UNMOUNTED NAVETTE-FORM OPAL GEMSTONE, 13.65CTS: Estate loose marquise opal gemstone, approx 13.65cts, 2.8 grams **NOTE: ALL JEWELRY & COIN LOTS REALIZING OVER $1,000 MUST BE PAID BY BANK WIRE**

Feb 20, 2026

ESTATE UNMOUNTED NAVETTE-FORM OPAL GEMSTONE, 13.65CTS

Austin Auction Gallery

Est. US$400-US$600

9.41 Ct Natural Black Flashing Fire Opal Round Cab: Weight - 9.41 Ct / Dimensions - 15.20 x 14.90 x 7.60 mm / Shape - Round Cab / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

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9.41 Ct Natural Black Flashing Fire Opal Round Cab

IGI Certified 27.07 ct. Carved Kangaroo Opal AUSTRALIA: IGI Certified 27.07 ct. Carved KANGAROO Opal - AUSTRALIA Play of Color Effect - On Report Cut - Carved Color - Light Yellow Clarity - Translucent Ct. wt. - 27.07 ct.</

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IGI Certified 27.07 ct. Carved Kangaroo Opal AUSTRALIA

Kissing Auction

Natural Rose Quartz 54.61 Ct. Clean Heart Checkerboard Cut 27 x 22 Mm. Gemstone From Brazil: Product ID: 805525978 Product Name: Natural Quartz Weight: 54.61 CT. Size: 27 x 22 x 18.2 MM. Shape: Heart Checkerboard Color: Rose Pink Clarity:IF Luster: Very Good Gems Origin: Brazil Treatment: Unh

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Natural Rose Quartz 54.61 Ct. Clean Heart Checkerboard Cut 27 x 22 Mm. Gemstone From Brazil

Treasure of Gems & Jewelry

25.90 ct. Natural Play of Color Opal - ETHIOPIA: 25.90 ct. Natural Play of Color Opal - ETHIOPIA Shape - Round Cabochon Color - Play of color Clarity - Opaque Ct. Weight - 25.90 ct. Origin - ETHIOPIA

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25.90 ct. Natural Play of Color Opal - ETHIOPIA

Kissing Auction

Vintage HAR Leaf Clamper Bracelet,White/Gold Enamel Washed with Lava Rocks, 6.5": Vintage HAR Leaf Clamper Bracelet,White/Gold Enamel Washed with Lava Rocks, 6.5". This has aurora borealis clear stones accenting the bracelet in graduated sizes and two lava rocks with purples and gr

Vintage HAR Leaf Clamper Bracelet,White/Gold Enamel Washed with Lava Rocks, 6.5"

Chairish Auctions

Est. US$500-US$600

US$400

0.89ct Bluish White Oval Opal Cabochon Gemstones: 0.89ct Bluish White Oval Opal Cabochon Gemstones This matching pair of natural bluish white opals has a total weight of 0.89 carats, averaging approximately 0.45 carats each. Cut as oval cabochons and

Feb 25, 2026

0.89ct Bluish White Oval Opal Cabochon Gemstones

Weatherham Estate Treasures

Est. US$500-US$600

Dinosaur Tooth, Plant Fossil & 6 Opal Specimens: Eastern Africa (Ethiopia), Australia, and North America (Montana), ca. millions of years ago. This assorted group includes a fossilized leaf or fern frond preserved in matrix and a shard of a Richardo

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Dinosaur Tooth, Plant Fossil & 6 Opal Specimens

Artemis Fine Arts

8.92ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL: 8.92ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Australia 8.92ct Measures 16.4mm x 15.3mm Polished cabochon Beautiful color play, purples, blue and greens

Mar 01, 2026

8.92ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Est. US$550-US$687

Natural Multi - Color Boulder Flashing 21.40 Ct. Free Form Cabochon Shape 31 x 16 Mm. Gemstone From: Product ID: 818727167 Product Name: Natural Opal Weight: 21.40 CT. Size: 31 x 16 x 3.7 MM. Shape: Free Form Cabochon Color: Multi-Color Clarity:Opaque Luster: Good Gems Origin: Queensland Australia Tr

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Natural Multi - Color Boulder Flashing 21.40 Ct. Free Form Cabochon Shape 31 x 16 Mm. Gemstone From

Treasure of Gems & Jewelry

Beautiful Fire Opal Loose Gemstone - 18 Carats: Beautiful Fire Opal Loose Gemstone - 18 CaratsShipping Rate: $15.00 .shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combine shipping on multiple items purch

2 days Left

Beautiful Fire Opal Loose Gemstone - 18 Carats

Fantasy Jewelry

Est. US$300-US$500

2.33 ct. Play of Color Natural White Opal - ETHIOPIA: 2.33 ct. Play of Color Natural White Crystal Opal - ETHIOPIA Cut - Pear Cabochon Color - Floral Flash Rainbow (White, Red, Orange, Green, Yellow, Violet, Blue Flashing) Ct. Weight - 2.33 ct. Dimensi

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2.33 ct. Play of Color Natural White Opal - ETHIOPIA

Kissing Auction

Loose Purple Opal-Colored Stones Lot – 38.7ct: Authentic lot of loose purple opal-colored stones totaling 38.7 carats. Features vibrant violet hues with natural variation. Offered loose as shown—ideal for jewelry making, inlay, crafts, or collec

Feb 25, 2026

Loose Purple Opal-Colored Stones Lot – 38.7ct

Est. US$10-US$100,000

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 mag

Feb 18, 2026

6.27 ct Trillion Cabochon Midnight Starry Night Black Opal Gemstone

Weatherham Estate Treasures

Est. US$250-US$400

Fine All Natural Australian Opal Mineral Specimen: Beautiful all natural Australian opal mineral specimen, lightly polished for a smooth exterior. Incredible coloring throughout including pinks, greens, white, grey and earth tones. Beautiful all natur

Feb 19, 2026

Fine All Natural Australian Opal Mineral Specimen

Inspired Auctions

Est. US$200-US$300

LOOSE NATURAL UNTREATED ROUND CUT CABOCHON OPAL Sale is for 1 round cut cabochon opal Opal measures: LOOSE NATURAL UNTREATED ROUND CUT CABOCHON OPAL Sale is for 1 round cut cabochon opal Opal measures 4mm If you purchase 2 and want matching pair please let me know, (obviously colors won't match exact

Mar 05, 2026

LOOSE NATURAL UNTREATED ROUND CUT CABOCHON OPAL Sale is for 1 round cut cabochon opal Opal measures

Est. US$104-US$128

19.85ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL: 19.85ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Australia19.85ct Measures 23.2mm x 13.1mm Polished rectangular shape cabochon, beautiful veins with color play

Mar 01, 2026

19.85ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Est. US$343-US$481

Natural Multi Color Opal Flashing Boulder 19.77 Ct. Free Form Cabochon Gemstone From Australia: Product ID: 818727181 / Product Name: Natural Opal / Weight: 19.77 CT. / Size: 32 x 17 x 5 MM. / Shape: Free Form Cabochon / Color: Multi-Color / Clarity:Opaque / Luster: Iridescent / Gems Origin: Que

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Natural Multi Color Opal Flashing Boulder 19.77 Ct. Free Form Cabochon Gemstone From Australia

Treasure of Gems & Jewelry

3.74ct LOOSE OVAL CABOCHON NATURAL WHITE OPAL 13x11mm: 3.74ct NATURAL WHITE OPAL Natural Untreated white opal 3.74ct Measures 14mm x 11mm x 4.2mm Nice colors, doesn't show well in pictures

3 days Left

3.74ct LOOSE OVAL CABOCHON NATURAL WHITE OPAL 13x11mm

Est. US$113-US$139

3.74ct LOOSE OVAL CABOCHON NATURAL WHITE OPAL 13x11mm: 3.74ct NATURAL WHITE OPAL Natural Untreated white opal 3.74ct Measures 14mm x 11mm x 4.2mm Nice colors, doesn't show well in pictures

Mar 19, 2026

3.74ct LOOSE OVAL CABOCHON NATURAL WHITE OPAL 13x11mm

Est. US$113-US$139

Natural Yellow Opal 6.36 Ct. Marquise Shape 24 x 10.7 Mm. Unheated Gemstone From Ethiopia: Product ID: 818709651 Product Name: Natural Opal Weight: 6.36 CT. Size: 24 x 10.7 x 6.8 MM. Shape: Marquise Color: Yellow Clarity:Opaque Luster: Good Gems Origin: Ethiopia Treatment: Unheated Crystal

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Natural Yellow Opal 6.36 Ct. Marquise Shape 24 x 10.7 Mm. Unheated Gemstone From Ethiopia

Treasure of Gems & Jewelry

16.41ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL: 16.41ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Australia16.41ct Measures 19.4mm x 9.7mm x 6.6mm

Mar 01, 2026

16.41ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Est. US$275-US$481

13.47ct Soul Prism Natural Multicolour Boulder Opal: 13.47ct Soul Prism Natural Multicolour Boulder Opal Embrace the cosmic dance of color and energy with this 13.47ct Natural Multicolour Boulder Opal, a powerful stone believed to awaken creativity, in

Feb 18, 2026

13.47ct Soul Prism Natural Multicolour Boulder Opal

Weatherham Estate Treasures

Est. US$350-US$500

Earthsplit Flame Boulder Opal Cushion Cabochon: Earthsplit Flame Boulder Opal Cushion Cabochon A dramatic fusion of earth and sky, this Boulder Opal gemstone features a cushion cabochon cut with a striking natural contrast, deep, earthy brown acce

Mar 02, 2026

Earthsplit Flame Boulder Opal Cushion Cabochon

Weatherham Estate Treasures

Est. US$300-US$400

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