Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
Category
Igneous And Mineral
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Amygdaloidal Basalt
Amygdaloidal Basalt
igneous
Vesicular Basalt with Epidote/Amygdaloidal Basalt
Amygdaloidal Basalt (Mg, Fe)2SiO4 + Ca2(Al, Fe)3(SiO4)3(OH)
igneous
Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
igneous
Labradorite (Larvikite variety)
Feldspar (Plagioclase series), (Na,Ca)(Si,Al)4O8
igneous
Granite Thin Section
Granitic rock (Phaneritic texture)
igneous
Granitic Pegmatite with Tourmaline
Granite (Feldspar/Quartz matrix) with Schorl (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)
igneous
Pyrite
Iron Sulfide (FeS2)
mineral
Granite (Dioritic or Hornblende-rich)
Phaneritic Plutonic Felsic to Intermediate Igneous Rock
igneous
Citrine (Yellow Quartz)
Silicon Dioxide (SiO2)
Mineral
Greenschist
Chlorite schist
metamorphic
Gneiss
Gneiss
metamorphic
Citrine
Silicon Dioxide with iron impurities (SiO2)
mineral
Grey Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
gemstone
Basalt Outcropping
Aphanitic Mafic Igneous Rock
igneous
Granite (Weathered)
Plutonic Igneous Rock (Granitic)
igneous
Amethyst (or Light Amethyst / Rose Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Yellow Quartz / Citrine Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Clear Quartz / Rose Quartz)
Silicon Dioxide (SiO2)
mineral
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Gold
Native Gold (Au)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Dyed Blue Quartz
Silicon Dioxide (SiO2) with artificial pigment
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine alternative)
Silicon Dioxide (SiO2) with iron impurities
mineral
Carnelian Agate in Matrix
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz / Quartzite)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon dioxide (SiO2)
mineral
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Labradorite (Raw)
(Ca,Na)(Al,Si)4O8
mineral
Labradorite (Polished Sphere)
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Amazonite with Quartz and Smoky Quartz
Potassium Aluminum Silicate (KAlSi3O8) with SiO2
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Rough Sapphire (possibly Yellow/Green Corundum)
Corundum (Al2O3)
mineral