Results for “Fossil Specimen”

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34.64 Carats Blue-Green Opal Rough - Natural Winton Opal , 28x21x6.5mm, 5XH: This substantial slice of natural Winton opal rough showcases dramatic patches of cobalt blue and turquoise green play-of-color streaking through its ironstone matrix. The surface reveals veins of viv

19 hrs Left

34.64 Carats Blue-Green Opal Rough - Natural Winton Opal , 28x21x6.5mm, 5XH

Est. $40-$80

56G Natural Blue Quartz Crystal with Stunning Texture - Healing Mineral Specimen: 56G Natural Blue Quartz Crystal with Stunning Texture - Healing Mineral Specimen Discover the beauty of this 56g natural blue quartz crystal, featuring captivating textures and vibrant hues. Perfect f

Mar 05, 2026

56G Natural Blue Quartz Crystal with Stunning Texture - Healing Mineral Specimen

Weatherham Estate Treasures

Est. $90-$150

Natural White Coral Tree, White Coral, Coral Tree, Coral Reef Decor, White Coral Reef, Natural Sea C: A striking natural coral specimen, featuring an intricate branching structure with dense, organic formations in soft ivory-white tones. The piece displays a highly textured surface with fine granular

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Natural White Coral Tree, White Coral, Coral Tree, Coral Reef Decor, White Coral Reef, Natural Sea C

Yorkville Auction Appraisals

A MASSIVE APOPHYLLITE SPECIMEN WITH STILBITE: 28" LONG AND 11.5" WIDE HERE IS ONE OF THE MOST GORGEOUS APOPHYLLITE SPECIMENS WITH STILBITE THAT I HAVE EVER HAD

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A MASSIVE APOPHYLLITE SPECIMEN WITH STILBITE

J. Greenstein & Co., Inc.

Gorgeous Large Ancient Ammonite Specimen: Wonderful well preserved ancient fossilized ammonite cut and polished to expose thousands of crystals and dozens of natural colors throughout. Brown, caramel, grey, and snow white among other natural

Feb 19, 2026

Gorgeous Large Ancient Ammonite Specimen

Inspired Auctions

Est. $300-$400

36g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen: 36g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen Weight: 36g Length:83mm Width:53mm Height:4mm View Photos For Further Details

Mar 05, 2026

36g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen

Weatherham Estate Treasures

Est. $60-$120

24g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen: 24g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen Weight: 24g Length:80mm Width:48mm Height:3m View Photos For Further Details

Mar 05, 2026

24g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen

Weatherham Estate Treasures

Est. $60-$120

61g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen: 61g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen Weight: 61g Length:100mm Width:63mm Height:5m View Photos For Further Details

Mar 05, 2026

61g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen

Weatherham Estate Treasures

Est. $60-$120

AN APOPHYLLITE SPECIMEN: India. 8.7” x 4.5 ” x 5”. The weight is 4990 grams

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AN APOPHYLLITE SPECIMEN

J. Greenstein & Co., Inc.

Wonderful Heavy Ancient Meteorite Specimen: Heavy ancient meteorite specimen with fine red iron patina throughout as shown. Pitting and surface shine from blazing through the atmosphere at hundreds of miles per hour at temperatures unimaginable

Feb 19, 2026

Wonderful Heavy Ancient Meteorite Specimen

Inspired Auctions

Est. $400-$600

65.49 Carats Electric Blue Labradorite Pair - Natural Madagascar Cabochons, 72XC: This striking labradorite pair dazzles with a vivid interplay of electric blue, teal, and indigo-classic hallmarks of high-quality labradorescence. Each piece exhibits dynamic sheen that shifts as lig

4 days Left

65.49 Carats Electric Blue Labradorite Pair - Natural Madagascar Cabochons, 72XC

Est. $30-$60

23mm Nanotyrannus Tooth Specimen: 23mm Nanotyrannus Tooth Specimen This authentic Nanotyrannus tooth plays a central role in the fascinating scientific debate about the Tyrannosauridae family. Unearthed from the Late Cretaceous Hell C

Feb 17, 2026

23mm Nanotyrannus Tooth Specimen

Weatherham Estate Treasures

Est. $650-$750

A POLISHED BULLSEYE MALACHITE SPECIMEN: 8.2” x 4.5” x 2.6”. Weight is 2258.5 grams

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A POLISHED BULLSEYE MALACHITE SPECIMEN

J. Greenstein & Co., Inc.

AN APOPHYLLITE WITH STILBITE SPECIMEN.: 4.7” x 4.5” x 7.1”. The weight is 3131.6 grams.

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AN APOPHYLLITE WITH STILBITE SPECIMEN.

J. Greenstein & Co., Inc.

Natural Amethyst Crystal Mineral Specimen: This natural amethyst mineral specimen displays rich purple coloration with crystalline structure visible throughout the stone. The piece features layered crystal growth with angular formations and na

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Natural Amethyst Crystal Mineral Specimen

Williamson Auction Gallery

30g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen: 30g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen Weight: 30g Length:91mm Width:42mm Height:5m View Photos For Further Details

Mar 05, 2026

30g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen

Weatherham Estate Treasures

Est. $60-$120

44g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen: 44g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen Weight: 44g Length:81mm Width:55mm Height:5m View Photos For Further Details

Mar 05, 2026

44g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen

Weatherham Estate Treasures

Est. $60-$120

32g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen: 32g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen Weight: 32g Length:80mm Width:53mm Height:3m View Photos For Further Details

Mar 05, 2026

32g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen

Weatherham Estate Treasures

Est. $60-$120

61g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen: 61g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen Weight: 61g Length:119mm Width:61mm Height:4mm View Photos For Further Details

Mar 05, 2026

61g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen

Weatherham Estate Treasures

Est. $60-$120

40g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen: 40g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen Weight: 40g Length:78mm Width:48mm Height:5m View Photos For Further Details

Mar 05, 2026

40g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen

Weatherham Estate Treasures

Est. $60-$120

39g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen: 39g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen Weight: 39g Length:76mm Width:57mm Height:5m View Photos For Further Details

Mar 05, 2026

39g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen

Weatherham Estate Treasures

Est. $60-$120

39g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen: 39g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen Weight: 39g Length:86mm Width:45mm Height:5mm View Photos For Further Details

Mar 05, 2026

39g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen

Weatherham Estate Treasures

Est. $60-$120

23g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen: 23g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen Weight: 23g Length:92mm Width:44mm Height:3m View Photos For Further Details

Mar 05, 2026

23g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen

Weatherham Estate Treasures

Est. $60-$120

37g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen: 37g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen Weight: 37g Length:81mm Width:58mm Height:4m View Photos For Further Details

Mar 05, 2026

37g Natural agate Agate Geode Slab/Slice quartz crystal mineral specimen

Weatherham Estate Treasures

Est. $60-$120

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