Chrysocolla on Matrix
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
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Sandstone
Sandstone (arenite is a more specific geological term for a clean sandstone, while wacke refers to a dirty sandstone with significant matrix)
Sedimentary
Blue Apatite
Chlorapatite / Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Milky or Greenish Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral
Beryl (var. Aquamarine/Blue Beryl) in Quartz Matrix
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Chrysocolla
Chrysocolla; (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Red Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with Fe2O3 inclusions)
metamorphic
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Limonite/Goethite Gossan
FeO(OH)·nH2O (Hydrated iron oxide)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Rutile in Quartz (Rutilated Quartz)
SiO2 with TiO2 inclusions
Mineral
Granite
Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)
igneous
Greenschist
Greenschist (Chlorite Schist facies)
metamorphic
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
mineral
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium), CuAl6(PO4)4(OH)8·4H2O
mineral
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Yellow Jasper (Chert variant)
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Green Aventurine
Silicon dioxide (SiO2) with inclusions of Fuchsite
mineral
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Garden Quartz
Included Quartz (SiO2 with accessory minerals such as Chlorite, Hematite, or Feldspar)
mineral
Amethyst Sage Agate
Silicon Dioxide (SiO2) with trace minerals (Manganese/Iron oxides)
mineral
Ruby
Corundum (mineral species), variety: Ruby (Al2O3 with Cr3+ as the chromophore)
Mineral
Sandstone (Iron-stained)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
sedimentary
Fluorite with Rhodochrosite
Fluorite (CaF2) and Rhodochrosite (MnCO3)
Mineral
Jasper with Quartz Vein
Silicon Dioxide (SiO2) with impurities
sedimentary
Red Sandstone
Arenite (primarily Quartz with Iron Oxide coating)
sedimentary
Yellow Sapphire (Raw)
Corundum (Al2O3)
mineral
Bloodstone
Heliotrope (Chalcedony)
mineral
White Marble (Whiskey Stone)
Recrystallized Calcite / Marble (CaCO3)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
mineral
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Rhodochrosite (Beads) and Citrine (Pendant)
Rhodochrosite (MnCO3) and Quartz variety Citrine (SiO2)
mineral
Marble
Recrystallized Calcite (CaCO3) Rock
metamorphic
Granite Pegmatite with Tourmaline and Muscovite
Pegmatite (Feldspar: KAlSi3O8, Quartz: SiO2, Schorl: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH))
igneous
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic