Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
gemstone
Category
Sedimentary And Igneous
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Muscovite Mica
KAl2(AlSi3O10)(OH)2
mineral
Labradorite (Raw)
(Ca, Na)(Al, Si)4O8
mineral
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz with Muscovite Mica
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride (KAl2(AlSi3O10)(F,OH)2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F (Calcium Fluorophosphate)
mineral
Yellow Agate
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Hypersthene
Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Chromium (Chrome)
Chromium (Cr)
mineral
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite River Pebble
Metamorphic Quartzite (SiO2)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Quartz (Silicon Dioxide) - SiO2
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Martian Basalt Rock
Extrusive Mafic Igneous Rock (Basalt)
igneous
Greenstone / Basalt with Amygdule
Amygdaloidal Basalt (altered to Greenstone)
igneous
Quartz with Feldspar
Silicon Dioxide (SiO2) with Potassium Feldspar (KAlSi3O8)
igneous
Granite River Cobble
Granite
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Snowflake Obsidian
Volcanic glass (SiO2) with Cristobalite (SiO2) inclusions
igneous
Granodiorite
Phaneritic Plutonic Rock (Granodiorite)
igneous
Granite (Pink/Red)
Phaneritic Plutonic Felsic Rock (major minerals: Quartz, Orthoclase Feldspar, Plagioclase Feldspar)
igneous
Granite
Granite (Felsic intrusive igneous rock)
igneous
Granite
Granitoid (SiO2 typically > 69%)
igneous
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Porphyry pebble
Porphyritic Andesite / Porphyry
igneous
Snowflake Obsidian
Spherulitic Volcanic Glass (SiO2 + impurities)
igneous
Indigo Gabbro (also known as Mystic Merlinite)
Gabbro (composed of Plagioclase Feldspar, Pyroxene, and minor Magnetite/Ilmenite)
igneous
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
igneous
Garnet Rhyolite
Rhyolite (high-silica volcanic rock) with almandine/spessartine garnet
igneous
Dalmatian Stone
Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)
igneous
Dyed Dalmatian Jasper (Dalmatian Stone)
Perthitic Feldspar with Arfvedsonite inclusions
igneous