Rose Quartz
Silicon Dioxide (SiO2) with inclusions of Dumortierite or similar minerals
mineral
Category
Mineral (Tectosilicate)
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Dumortierite Quartz
Al7BO3(SiO4)3O3 (Borosilicate mineral/Quartz inclusion)
mineral
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
metamorphic
Diamond
Diamond (pure carbon, C)
mineral
Granite
Granite
Igneous
Granite
Phaneritic Plutonic Felsic Rock
igneous
Greenschist
Greenschist (Chlorite Schist facies)
metamorphic
Granite
Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)
igneous
Sandstone (likely Arkosic or Lithic Sandstone)
Clastic Sedimentary Rock (SiO2 with assorted minerals)
sedimentary
Desert Rose (Baryte or Selenite variant)
Barium Sulfate (BaSO4) or Gypsum (CaSO4·2H2O) with Sand inclusions
mineral
Greenschist
Greenschist (Chlorite-Albite-Epidote Schist)
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
Shale
Shale (clay-sized silicate minerals)
sedimentary
Barite
Barium Sulfate (BaSO4)
mineral
Bismuth
Bismuth (Bi)
Mineral
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
Calamites (Fossil)
Calamites sp. (Tracheophyta, Equisetopsida)
sedimentary
Sandstone
Arenite
sedimentary
Quartzite with inclusions
Metamorphosed Quartz-rich Rock (SiO2)
metamorphic
Fossilized Shark Tooth (Sand Tiger)
Carcharias taurus (fossil specimen)
sedimentary
Lapis Lazuli
Lapis lazuli (a rock primarily composed of Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Pyrite on Limestone
Iron Disulfide (FeS2) in Calcium Carbonate (CaCO3) matrix
sedimentary (matrix) / mineral (inclusion)
Note regarding image quality
Indeterminate
Manganese Oxide Crust on Limestone
Manganese Oxides (e.g., Pyrolusite MnO2 or Romanechite) on CaCO3
sedimentary
Tiger's Eye
Tiger's Eye (SiO2 with crocidolite inclusions)
mineral
Fossilized Shark Tooth
Fossilised Chondrichthyes dental specimen (likely Otodus or Carcharias sp.)
mineral
Quartz on Feldspar
Silicon Dioxide (SiO2) with Potassium Feldspar (KAlSi3O8)
igneous
Schist
Mica Schist
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Shale
Fissile Mudrock (Clay-rich Sedimentary Rock)
sedimentary
Geode (unopened)
SiO2 - Chert-shelled concretion (mostly Quartz)
sedimentary
Gold (Elemental Metal)
Gold (Au)
Mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Lapis Lazuli
Lapis Lazuli (Complex aggregate containing Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)
metamorphic
Porphyritic Basalt (with Olivine or Quartz phenocryst)
Porphyritic Basalt (Mafic Extrusive)
igneous
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Quartz with Mica inclusions (likely Schist or Gneiss host)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)
metamorphic
Quartz with Schist Inclusion
Crystalline Silicon Dioxide (SiO2) with Muscovite/Biotite Schist
metamorphic