Chert / Yellow Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Category
Synthetic (Man Made Glass)
Browse synthetic (man made glass) specimens identified by the Rock Identifier community.
Learn about Synthetic (Man Made Glass) in the encyclopedia
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Coal (Anthracite / Bituminous)
Organic Sedimentary Rock (Carbon-based)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Chert with Limestone
Silicon Dioxide (SiO2) in Calcium Carbonate (CaCO3) Matrix
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Coquina
Biogenic Limestone (Calcite/Aragonite base, CaCO3)
sedimentary
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Amber (Copal)
Organic gemstone, fossilized tree resin (often immature amber or copal)
Mineral
Hoodoo (Limestone / Siltstone Formation)
Claron Formation (Sedimentary Rock - Limestone, Mudstone, Dolomite)
sedimentary
Wood Beads (Palmwood/Ebony)
Various species for wood, but often refers to woods like Palmwood (e.g., Borassus flabellifer) or Ebony (Diospyros spp.) for their distinctive grain and hardness.
Organic Gem Material (Botanical)
Bismuth
Bismuth (Bi)
mineral
Rutilated Quartz
SiO2 with TiO2 inclusions (Rutile)
Mineral
Megalodon Shark Tooth
Otodus megalodon
fossil
Chert / River Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Flint/Chert Nodule in Limestone
Sedimentary rock containing microcrystalline quartz (SiO2) within a calcium carbonate (CaCO3) matrix
sedimentary
Diamond (Cut Gemstone)
Natural Carbon (C)
gemstone
Diamond (Faceted)
Carbon (C)
gemstone
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Common Chert node)
Silicon Dioxide (SiO2)
sedimentary
Diamond
Diamond (pure Carbon, C)
mineral
Granite
Phaneritic Plutonic Felsic Rock
igneous
Pyrite
Iron Sulfide (FeS2)
mineral
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Turquoise bead bracelet
Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O
mineral
Desert Rose (Barite Rose / Gypsum Rose)
Barium Sulfate (BaSO4) or Hydrous Calcium Sulfate (CaSO4%22H2O)
mineral
Slate
Metamorphic pelitic rock
metamorphic
Chert (often called Flint)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Angel Aura Quartz (Treated Clear Quartz)
Silicon Dioxide (SiO2) coated with Vaporized Silver and Platinum
mineral
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(OH)₄(BO₃)₃Si₆O₁₈)
Mineral
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Diamond
Diamond (pure carbon; C)
Mineral
Pink Marble
Recrystallized Limestone (Calcium Carbonate, CaCO3)
metamorphic
Fossil Shark Tooth
Carcharocles or Lamniformes (order)
fossil
Fossiliferous Limestone (Coquina)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Native Silver
Silver (Ag)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Polished serpentine pendulum
Serpentine-group minerals, chiefly antigorite/lizardite; approximate formula Mg₃Si₂O₅(OH)₄
metamorphic
Granodiorite with Quartz Veining
Granodiorite (containing Plagioclase Feldspar, Quartz, and Biotite/Hornblende) with Quartz (SiO2) veins
igneous
Crackled Quartz (Blue Dyed)
Silicon Dioxide (SiO2) with anthropogenic dye
mineral
Basalt
Basalt
Igneous
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
sedimentary