Carnelian / Agate
Silicon Dioxide (SiO2) - Chalcedony
mineral
Category
Igneous And Mineral
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Quartz with Iron Oxide Staining
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
KAl2(AlSi3O10)(OH)2
mineral
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Yellow Agate
Silicon Dioxide (SiO2)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky Quartz / Quartzite)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Extrusive volcanic rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Diorite
Diorite (intermediate intrusive igneous rock)
igneous
Amygdaloidal Basalt
Basalt with secondary mineral infilling (SiO2/CO3)
igneous
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Mica Schist
Mica Schist
metamorphic
Mica (Lepidolite or Muscovite)
Phyllosilicate mineral (KAl2(AlSi3O10)(OH)2 for Muscovite)
mineral
Magnetite
Magnetite (Fe3O4)
Mineral
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Black Obsidian
Volcanic Glass (predominantly SiO2)
igneous
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Granitic Gneiss
Gneiss (quartz-feldspar-mica complex)
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
mineral
Greenstone / Diabase Porphyry
Porphyritic Diabase (Micro-gabbro)
Igneous
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Rough Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst (Geode Fragment)
Silicon Dioxide with iron impurities (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Vesicular Basalt (Amygdaloidal Basalt)
Basalt with Secondary Mineral Inclusions
igneous
Amygdaloidal Basalt
Basalt with secondary mineral infilling
igneous
Granite (weathered/river-tumbled)
Granite (Plutonic Igneous Rock)
Igneous Rock
Raw Ruby (Corundum)
Corundum (Aluminum Oxide, Al2O3)
mineral