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Free Appraisal
Gold Nugget - 3,088.16 Grams (99.3 Troy Ounces)
Australia
Estimate: $600,000 - up.
Open for bidding around 08/05/2026
Auction 8271
Track Item
Rhodochrosite
N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
7.9 x 4.9 x 4.7 cm (3.11 x 1.93 x 1.85 in)
Auction 8265
| Lot: 72110
Current Bid:
$25,000
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Muonionalusta Meteorite Cube - 3,643.45 Grams
Iron, IVA
Norrbottens, Sweden - (67° 48'N, 23° 6'E)
Found: 1906
Estimate: $10,000 - up.
Open for bidding around 08/05/2026
Auction 8271
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Gibeon Meteorite
Iron, fine octahedrite - IVA
Great Nama Land, Namibia - (25° 30'S, 18° 0'E)
Auction 5280
| Lot: 72187 | Apr 30, 2017
Sold For:
$6,250.00
Buy Now from Owner
Buy Now Price
$12,900
Make Offer to Owner
$9,375 or more
Charoite Box
Stone Source: Russia
Artist: Konstantin Libman
(Total: 2 Items)
Auction 8248
| Lot: 72268 | Apr 29, 2026
Sold For:
$3,125.00
Buy Now from Owner
Buy Now Price
$4,000
Make Offer to Owner
$3,500 or more
Megalodon Shark Tooth
Otodus megalodon
Miocene
Morgan River
South Carolina, USA
Estimate: $2,000 - up.
Open for bidding around 08/05/2026
Auction 8271
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Emerald, Pyrite, and Quartz
Chivor Mine, Chivor, Boyacá Department, Colombia
6.0 x 5.3 x 3.2 cm (2.36 x 2.08 x 1.25 in)
Auction 8265
| Lot: 72021
Current Bid:
$1,000
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Cobaltic Calcite
Agoudal Mines, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco
5.0 x 3.0 x 3.6 cm (1.96 x 1.18 x 1.41 in)
Auction 8265
| Lot: 72008
Starting Bid:
$1,000
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Fluorite
Huanggang Fe-Sn deposit, Hexigten Banner, Chifeng City, Inner Mongolia, China
6.9 x 6.9 x 4.4 cm (2.72 x 2.72 x 1.73 in)
Auction 8264
| Lot: 72080
Amount: $875.00
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Elbaite (Tourmaline)
Himalaya Mine, Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
5.5 x 2.7 x 2.5 cm (2.16 x 1.06 x 0.98 in)
Auction 8265
| Lot: 72006
Starting Bid:
$750
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Tourmaline
Himalaya Mine, Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
7.4 x 2.7 x 2.7 cm (2.91 x 1.06 x 1.06 in)
Auction 8265
| Lot: 72001
Starting Bid:
$750
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Celestine
Maybee Quarry, Maybee, Exeter Township, Monroe County, Michigan, USA
5.8 x 5.2 x 3.3 cm (2.28 x 2.04 x 1.29 in)
Auction 8265
| Lot: 72007
Starting Bid:
$500
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Dinosaur Trackway
Grallator sp.
Early Jurassic
Portland Formation
Kornell Nash Quarry, South Hadley, Massachusetts, USA
26.30 x 9.88 x 2.17 inches (66.80 x 25.10 x 5.51 cm)
Auction 212623
| Lot: 76017
Estimate: $1,000 - up.
Starting Bid:
$500
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Fossil Crab
Potomon sp.
Pleistocene
Travertine Deposits
Denizli Basin, Southwest Turkey
5.59 x 4.31 x 1.86 inches (14.20 x 10.96 x 4.73 cm)
Auction 212623
| Lot: 76008
Estimate: $500 - up.
Current Bid:
$460
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Woolly Mammoth Tooth Knife
Mammuthus primigenius
Pleistocene
Alaska, USA
4.50 x 0.99 x 0.65 inches (11.44 x 2.51 x 1.64 cm)
Auction 212623
| Lot: 76015
Estimate: $600 - up.
Current Bid:
$420
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Fossil Fish Plate
Knightia sp.
Eocene
Green River Formation
Wyoming, USA
17.72 x 13.39 x 0.65 inches (45.00 x 34.00 x 1.66 cm)
Auction 212623
| Lot: 76007
Estimate: $500 - up.
Current Bid:
$410
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Gold Nugget
Unknown Locality
0.47 x 0.45 x 0.28 inches (1.19 x 1.14 x 0.70 cm)
Auction 212623
| Lot: 76027
Estimate: $800 - up.
Starting Bid:
$400
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Partial Mosasaur Jaw
Mosasaurus beaugei
Late Cretaceous
Continental Sandstone Deposits
Kem Kem Basin, Morocco
13.39 x 4.60 x 0.96 inches (34.00 x 11.68 x 2.43 cm)
Auction 212623
| Lot: 76012
Estimate: $800 - up.
Current Bid:
$400
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Sericho Meteorite Slice
Pallasite
Kenya - (1°5'41.16"N, 39°6'8.30"E)
Found: 2016
2.63 x 1.92 x 0.14 inches (6.69 x 4.87 x 0.36 cm)
Auction 212623
| Lot: 76032
Estimate: $800 - up.
Starting Bid:
$400
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Polished Pietersite Box
Namibia
4.66 x 3.70 x 1.57 inches (11.83 x 9.40 x 4.00 cm)
Auction 212623
| Lot: 76039
Estimate: $800 - up.
Starting Bid:
$400
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Megalodon Shark Tooth
Otodus megalodon
Miocene
Hawthorn Formation
Cooper & Wando Rivers
South Carolina, USA
4.10 x 2.76 x 1.04 inches (10.41 x 7.00 x 2.64 cm)
Auction 212623
| Lot: 76009
Estimate: $600 - up.
Starting Bid:
$300
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Polished Tiger's-Eye Slab
Western Australia
12.20 x 7.48 x 0.51 inches (31.00 x 19.00 x 1.30 cm)
Auction 212623
| Lot: 76046
Estimate: $600 - up.
Current Bid:
$300
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Polished Petrified Wood Box
Araucarioxylon arizonicum
Triassic
Chinle Formation
Arizona, USA
4.79 x 3.66 x 1.79 inches (12.17 x 9.30 x 4.55 cm)
Auction 212623
| Lot: 76038
Estimate: $600 - up.
Current Bid:
$300
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Juvenile Woolly Mammoth Tooth
Mammuthus primigenius
Pleistocene
Alaska, USA
2.44 x 2.33 x 1.27 inches (6.21 x 5.92 x 3.23 cm)
Auction 212623
| Lot: 76013
Estimate: $600 - up.
Starting Bid:
$300
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Dinosaur Vertebra with Stand
Hypacrosaurus sp.
Cretaceous
Montana, USA
6.73 x 5.30 x 2.72 inches (17.10 x 13.45 x 6.92 cm)
Auction 212623
| Lot: 76019
Estimate: $600 - up.
Starting Bid:
$300
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Malachite
Congo
18.9 x 17.8 x 6.1 cm (7.44 x 7.00 x 2.40 in)
Auction 8265
| Lot: 72097
Current Bid:
$250
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Theropod Dinosaur Tooth
Spinosaurus sp.
Late Cretaceous
Kem Kem Group
Morocco
4.75 x 1.22 x 0.99 inches (12.07 x 3.09 x 2.52 cm)
Auction 212623
| Lot: 76020
Estimate: $500 - up.
Starting Bid:
$250
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Fossil Starfish
Petraster sp.
Oligocene
Kaid Rami
Morocco
9.37 x 5.88 x 0.63 inches (23.80 x 14.94 x 1.60 cm)
Auction 212623
| Lot: 76002
Estimate: $500 - up.
Current Bid:
$250
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NWA 11428 Lunar Meteorite Slice
Lunar (feldspathic breccia)
Northwest Africa
Found: 2017
2.28 x 1.38 x 0.08 inches (5.80 x 3.51 x 0.21 cm)
Auction 212623
| Lot: 76031
Estimate: $500 - up.
Starting Bid:
$250
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Fluorite
Elmwood Mine, Carthage, Smith County, Tennessee, USA
6.3 x 4.5 x 4.3 cm (2.48 x 1.77 x 1.69 in)
Auction 8265
| Lot: 72155
Starting Bid:
$250
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Pyrite Cubes
Navajún, Spain
5.23 x 4.05 x 2.40 inches (13.28 x 10.29 x 6.10 cm)
Auction 212623
| Lot: 76028
Estimate: $500 - up.
Starting Bid:
$250
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Burmite with Grasshopper Inclusion
Burmite
Cretaceous
Hukawng Valley, Myitkyina District, Kachin State, Myanmar
0.87 x 0.47 x 0.17 inches (2.20 x 1.20 x 0.43 cm)
Auction 212623
| Lot: 76026
Estimate: $500 - up.
Starting Bid:
$250
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Fluorite and Sphalerite
Elmwood Mine, Carthage, Smith County, Tennessee, USA
6.8 x 5.6 x 5.4cm (2.67 x 2.20 x 2.12 in)
Auction 8265
| Lot: 72162
Current Bid:
$125
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Polished Petrified Wood Bookends
Araucarioxylon arizonicum
Triassic
Chinle Formation
Arizona, USA
7.87 x 6.30 x 2.19 inches (20.00 x 16.00 x 5.55 cm)
(Total: 2 Items)
Auction 212623
| Lot: 76040
Estimate: $400 - up.
Current Bid:
$100
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Calcite
Kushikino Mine (Mitsui-Kushikino Mine), Ichikikushikino City, Kagoshima Prefecture, Japan
8.3 x 5.7 x 4.4 cm (3.27 x 2.24 x 1.73 in)
Auction 8265
| Lot: 72144
Current Bid:
$60
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Ammolite Fossil
Placenticeras sp.
Cretaceous
Bearpaw Formation
Alberta, Canada
3.54 x 2.42 x 0.59 inches (8.99 x 6.14 x 1.49 cm)
Auction 212623
| Lot: 76001
Estimate: $300 - up.
Current Bid:
$1
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Schorl
Erongo Mountains
Erongo Region, Namibia
0.83 x 0.58 x 0.49 inches (2.10 x 1.48 x 1.25 cm)
Auction 212623
| Lot: 76029
Estimate: $200 - up.
Starting Bid:
$1
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Fulgerite
Morocco
6.50 x 1.14 x 1.09 inches (16.50 x 2.90 x 2.78 cm)
Auction 212623
| Lot: 76030
Estimate: $400 - up.
Starting Bid:
$1
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Polished Labradorite Free-Form
Madagascar
6.61 x 4.89 x 2.61 inches (16.80 x 12.41 x 6.64 cm)
Auction 212623
| Lot: 76042
Estimate: $200 - up.
Current Bid:
$1
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Mineral
Open for bidding around 06/25/2026
Auction 212627
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Mineral
Open for bidding around 06/18/2026
Auction 212626
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Mineral
Open for bidding around 07/02/2026
Auction 212628
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Meteorite
Open for bidding around 06/25/2026
Auction 212627
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Lapidary
Open for bidding around 06/25/2026
Auction 212627
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Mineral
Open for bidding around 06/25/2026
Auction 212627
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Lapidary
Open for bidding around 06/18/2026
Auction 212626
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Lapidary
Open for bidding around 06/18/2026
Auction 212626
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Gemstone
Open for bidding around 06/18/2026
Auction 212626
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