Fancy Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Category
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Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Pyrite (on Quartz/Sulfide matrix)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Dyed Agate
SiO2 (Silicon Dioxide) - Chalcedony variety
Mineral
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
Igneous
Fossiliferous Limestone
Bioclastic Limestone (with Brachiopod and Bivalve molds)
sedimentary
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Amethyst
Silicon Dioxide (SiO2) with Fe3+ impurities
mineral
Amethyst
Silicon Dioxide (SiO2)
mineral
Garnet in Matrix
Almandine or Spessartine Garnet in Quartz/Schist Matrix (X3Al2(SiO4)3)
metamorphic
Garnet in Matrix (likely Almandine Garnet)
Almandine (Fe3Al2(SiO4)3)
metamorphic
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Quartz (Chert/Quartzite variant)
Silicon Dioxide (SiO2)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
sedimentary
Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Chalcedony (Common Opal variant or Quartz)
Silicon Dioxide (SiO2)
mineral
Bronzite
Enstatite (var. Bronzite), (Mg,Fe)SiO3
mineral
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Amethyst (Druze)
Silicon Dioxide (SiO2) with iron impurities
mineral
Limonite Concretion (Ironstone)
Limonite (FeO(OH)·nH2O) with Goethite and Hematite
sedimentary
Turquoise and Red Coral (with Grizzly Bear Claw)
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Precious Coral (Corallium rubrum)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)
mineral
Granite (River-worn pebble)
Phaneritic plutonic rock (SiO2 + Al2O3)
igneous
Limestone with Calcite Veins
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Orange Quartz / Quartzite
Silicon Dioxide (SiO2) with iron oxide inclusions
metamorphic
Lake Superior Agate
Chalcedony (SiO2 with Iron inclusions)
mineral
Bumblebee Jasper
Calcite-bearing Volcanic Tuff containing Orpiment (As2S3) and Realgar (As4S4)
sedimentary
Vesicular Basalt
Vesicular Basalt (Aphanitic-Vesicular Mafic Rock)
igneous
Sodalite
Chloric sodium aluminum silicate (Na8(Al6Si6O24)Cl2)
mineral
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Metamorphosed Quartz (SiO2)
metamorphic
Serpentine
Antigorite/Lizardite (Mg, Fe)3Si2O5(OH)4
metamorphic