Opal Geodes & Minerals

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Unpolished Pink Opal Formation: Unpolished pink opal formation from Peru. 5.25" x 8.75" x 3". 1 pounds, 12 ounces.

Apr 26, 2026

Unpolished Pink Opal Formation

Fossils & Gemstones of Houston

Est. $500-$600

16.31 Ct Natural Dendrite Opal Round Cab: weight - 16.31 Ct / Size - 21.20 x 21.20 x 4.60 mm / Shape - Excellent Round Cab / Origin - Brazil / Treatment - None

Apr 13, 2026

16.31 Ct Natural Dendrite Opal Round Cab

Est. $75-$150

70.45 tcw. Natural Rough Opal Parcel: Item is the exact item in image - Bidder is responsible for all value and grade determination - Please review all terms prior to placing any bids- Any bid is an agreement to all terms and conditions -

6 days Left

70.45 tcw. Natural Rough Opal Parcel

Antique Finder Services

Est. $95-$115

36.73 Ct Natural Dendrite Opal Cushion Cab: weight - 36.73 Ct / Size - 33.00 x 33.00 x 5.10 mm / Shape - Excellent Cushion Cab / Origin - Brazil / Treatment - None

Apr 28, 2026

36.73 Ct Natural Dendrite Opal Cushion Cab

Est. $75-$150

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Opal Auctions

2.05 Carats Natural Ruby Gemstone - 9X7X5 mm

Pretty Blue Tourmaline Gemstone - 1.10 Carats - 7X5X4 mm

4.55 Carats Paired Emerald Cut Santa Maria Aquamarine Gemstones - 10X7X5 mm

Natural Loose Gemstones Starting at $50

Fantasy Jewelry

Starts on:

Muscat, Muscat, AE

21 hrs Left

Vintage Chunky Hand Knotted Bamboo Coral Statement Necklace

Vintage METROPOLITAN MUSEUM OF ART 24K Gold Plated Jade Egyptian Cuff Bracelet

Vintage 14K Yellow Gold Diamond Ring in Tiffany Setting, Size 4.25

Spring Fine & Costume Jewelry Treasure Hunt

Great Lakes VNTG

Starts on:

Avon Lake, OH, US

Art Deco, Diamond, ruby, and platinum bracelet

Rene Lalique, Art Nouveau opal and enamel ring

Retro, Austrian citrine, diamond, and tricolor gold brooch

Jewelry: Antique to Retro

Toomey & Co. Auctioneers

Starts on:

Chicago, IL, US

3 days Left

Opal Geodes & Minerals

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