Showing 97–192 of 507 results

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  Cascandite & Thortveitite

  $400
• 

  Cassiterite

  $30
• 

  Cassiterite

  $80
• 

  Cassiterite on Zinnwaldite

  $90
• 

  Celestite

  $25
• 

  Celestite

  $15
• 

  Ceruleite

  $45
• 

  Cerussite

  $60
• 

  Cetineite

  $45
• 

  Chabazite

  $40
• 

  Chalcedony

  $80
• 

  Chalcedony Geode

  $15
• 

  Chalcedony Geode

  $20
• 

  Chalcedony Geode

  $15
• 

  Chalcedony Geode

  $15
• 

  Chalcopyrite & Malachite

  $200
• 

  Chalcopyrite & Sphalerite

  $125
• 

  Chalcopyrite & Sphalerite

  $85
• 

  Chalcopyrite & Sphalerite

  $140
• 

  Chalcopyrite & Tetrahedrite

  $80
• 

  Chalcopyrite on Quartz

  $30
• 

  Chalcopyrite, Galena & Sphalerite

  $50
• 

  Chrome-Tremolite

  $45
• 

  Churchite-Y

  $100
• 

  Churchite-Y

  $115
• 

  Cinnabar on Calcedony

  $75
• 

  Clinochlore v. Diabantite

  $45
• 

  Clinochlore v. Kotschubeite

  $65
• 

  Cobaltite

  $25
• 

  Cobaltlotharmeyerite

  $75
• 

  Coloradoite

  $275
• 

  Cool Geode

  $20
• 

  Cool Geode

  $30
• 

  Cooperite & Vysotskite

  $50,000
• 

  Copper Nugget

  $20 – $30
• 

  Coprolite

  $20
• 

  Cornetite

  $40
• 

  Corundum

  $20
• 

  Corundum v. Ruby

  $40
• 

  Cosalite, Pyrite & Gold

  $75
• 

  Covellite

  $65
• 

  Creaseyite

  $65
• 

  Crinoids

  $25
• 

  Cummingtonite

  $150
• 

  Cuprorhodsite

  $50,000
• 

  Dagenaisite & Xocolatlite

  $140
• 

  Davidite-La

  $75
• 

  Davidite-La

  $75
• 

  Davidite-La

  $70
• 

  Davidite-La

  $70
• 

  Diamonds

  $45 – $200
• 

  Dickthomssenite

  $125
• 

  Dinosaur Bone

  $150
• 

  Dinosaur Bone

  $75
• 

  Dinosaur Bone

  $95
• 

  Dinosaur Bone

  $95
• 

  Dinosaur Bone

  $125
• 

  Dinosaur Bone

  $40
• 

  Dinosaur Bone

  $40
• 

  Dinosaur Bone

  $25
• 

  Dinosaur Bone

  $35
• 

  Dinosaur Bone

  $40
• 

  Dinosaur Bone

  $30
• 

  Dinosaur Bone #2

  $95
• 

  Dinosaur Bone #3

  $250
• 

  Dinosaur Bone #4

  $250
• 

  Dinosaur Bone #5

  $400
• 

  Dinosaur Bone #7

  $300
• 

  Dinosaur Bone #8

  $125
• 

  Dinosaur Bone #9

  $145
• 

  Dinosaur Bone Slab

  $25
• 

  Dinosaur Bone Slab #2

  $25
• 

  Dinosaur Bones

  $25 – $200
• 

  Dinosaur Cabochons

  $25
• 

  Diopside

  $18
• 

  Dolomite

  $45
• 

  Domeykite

  $85
• 

  Druzy Agates

  $25 – $60
• 

  Dumortierite

  $30
• 

  Dyscrasite

  $40
• 

  Emerald

  $20
• 

  Empressite on Sylvanite

  $140
• 

  Epidote

  $90
• 

  Epidote

  $70
• 

  Epidote on Feldspar

  $25
• 

  Erythrite

  $75
• 

  Erythrite

  $85
• 

  Erythrite

  $140
• 

  Erythrite on Safflorite

  $85
• 

  Euxenite-Y

  $350
• 

  Euxenite-Y

  $120
• 

  Ferberite

  $180
• 

  Fergusonite-Y

  $250
• 

  Fergusonite-Y

  $250
• 

  Fern Wood

  $30
• 

  Fernandinite, Pintadoite & Metarossite

  $70