Si – Silicon

Showing 1–100 of 114 results

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  Allanite-Nd

  $180
• 

  Almandine Garnet

  $40
• 

  Amazonite

  $45
• 

  Amazonite

  $30
• 

  Amazonite

  $25
• 

  Amethyst

  $350
• 

  Amethyst #11

  $30
• 

  Amethyst #12

  $30
• 

  Apophyllite

  $25
• 

  Aquamarine

  $120
• 

  Aquamarine

  $20
• 

  Aquamarine

  $500
• 

  Aquamarine

  $330
• 

  Aquamarine & Smoky Quartz

  $110
• 

  Bavenite

  $80
• 

  Bazzite

  $950
• 

  Biotite

  $40
• 

  Bustamite

  $75
• 

  Cascandite & Thortveitite

  $400
• 

  Cassiterite on Zinnwaldite

  $90
• 

  Chabazite

  $40
• 

  Chalcedony

  $90
• 

  Chalcopyrite & Sphalerite

  $125
• 

  Chalcopyrite & Sphalerite

  $85
• 

  Chalcopyrite & Sphalerite

  $140
• 

  Chrome-Tremolite

  $45
• 

  Clinochlore v. Diabantite

  $45
• 

  Clinochlore v. Kotschubeite

  $65
• 

  Cummingtonite

  $250
• 

  Diopside

  $20
• 

  Emerald

  $20
• 

  Epidote

  $90
• 

  Epidote

  $70
• 

  Epidote on Feldspar

  $25
• 

  Ferrierite-NH₄

  $220
• 

  Fluorite

  $75 – $85Price range: $75 through $85
• 

  Franklinite, Zincite & Willemite

  $55
• 

  Gadolinite-Y

  $250
• 

  Galena & Pyrite on Quartz

  $65
• 

  Gallian Allanite-Ce

  $300
• 

  Gold & Quartz on Pyrite

  $1,750
• 

  Hafnon

  $12,500
• 

  Hemimorphite

  $65
• 

  Heulandite

  $50
• 

  Keiviite-Y

  $110
• 

  Kolbeckite

  $200
• 

  Kyanite

  $25
• 

  Kyanite

  $25
• 

  Labradorite

  $45
• 

  Lepidolite

  $40
• 

  Lepidolite

  $40
• 

  Limonite on Smoky Quartz

  $75
• 

  Microcline

  $60
• 

  Molybdenite on Quartz

  $65
• 

  Petedunnite

  $40
• 

  Phenakite

  $75 – $150Price range: $75 through $150
• 

  Phosinaite-(Ce) on Ussingite

  $90
• 

  Phosinaite-Ce

  $150
• 

  Pollucite

  $80
• 

  Pollucite

  $80
• 

  Pollucite

  $80
• 

  Pollucite

  $75
• 

  Pollucite

  $25 – $80Price range: $25 through $80
• 

  Pyrite & Galena on Quartz

  $70
• 

  Pyrite on Fluorite

  $120
• 

  Pyroxmangite

  $40 – $100Price range: $40 through $100
• 

  Pyroxmangite

  $60
• 

  Quartz

  $250
• 

  Quartz

  $400
• 

  Quartz & Pyrite on Tetrahedrite

  $150
• 

  Quartz Crystal

  $25
• 

  Quartz, Galena & Pyrite

  $75
• 

  Rhodochrosite

  $165
• 

  Rhodonite on Galena

  $85
• 

  Riebeckite

  $70
• 

  Riebeckite

  $75
• 

  Roscoelite

  $85
• 

  San Rafael Swell Bubble Agate

  $20 – $40Price range: $20 through $40
• 

  Shattuckite

  $35
• 

  Smoky Quartz

  $60
• 

  Smoky Quartz

  $55
• 

  Smoky Quartz

  $75
• 

  Smoky Quartz

  $40 – $250Price range: $40 through $250
• 

  Smoky Quartz & Microcline

  $30
• 

  Sodalite

  $20
• 

  Sowbelly Agate & Amethyst

  $120
• 

  Spodumene

  $55
• 

  Tanzanite w Pyrite & Graphite

  $55
• 

  Thorite & Zircon

  $120
• 

  Titanite

  $40
• 

  Titanite

  $250
• 

  Topaz

  $35
• 

  Topaz

  $40
• 

  Topaz

  $85
• 

  Topaz on Zinnwaldite

  $90
• 

  Tourmaline

  $25
• 

  Tourmaline

  $65
• 

  Tourmaline

  $140
• 

  Tourmaline

  $70
• 

  Tourmaline

  $180