Pink Granite
Phaneritic intrusive igneous rock (high Potassium-Feldspar)
igneous
Category
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Granite (specifically Pink Granite)
Phaneritic Plutonic Rock (High Potassium Feldspar Granite)
igneous
Basalt
Basalt (Mafic Aphanitic Igneous Rock)
igneous
Sandstone
Clastic sedimentary rock (quartz arenite)
sedimentary
Prasiolite
Silicon Dioxide (SiO2)
mineral
Granite
Granite (phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)
igneous
Dyed Chalcedony (Agate)
Silicon Dioxide (SiO2) with artificial pigment
mineral
Yellow Ochre (Limonite)
Limonite (FeO(OH)·nH2O)
mineral
Limonite / Goethite Ironstone
FeO(OH)·nH2O (Hydrous iron oxide)
mineral
Green Druzy Quartz (Prasiolite)
Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)
mineral
Red Granite
Felsic intrusive igneous rock (K-feldspar rich Granite)
igneous
Sandstone
Sandstone (Clastic Sedimentary Rock)
Sedimentary Rock
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)
igneous
Rounded weathered pebble, likely sandstone or altered limestone
Indeterminate clastic carbonate/siliciclastic rock; exact identification requires a fresh surface and tests
sedimentary
Turquoise (Green variety)
Hydrous phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Blue Agate (Dyed)
Silicon Dioxide (SiO2)
Sedimentary (formed from silica deposits)
Yellow Ochre
Goethite-rich clay (Hydrated Iron Oxide: FeO(OH)·nH₂O)
mineral
Sandstone
Arenite (composed primarily of Quartz: SiO2)
sedimentary
Piddock bored rock (Boring Stone)
Ichnofossil-bearing Limestone or Mudstone (trace fossils by Pholadidae)
sedimentary
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium) CuAl6(PO4)4(OH)8·4H2O
mineral
Diamond (or Cubic Zirconia simulant)
C (Carbon) or ZrO2 (Zirconium Dioxide)
gemstone
Carnelian and White Quartz Bracelet
Silicon Dioxide (SiO2) - specifically Carnelian (Chalcedony) and Rock Crystal/Snow Quartz
mineral
Red cabochon gemstone, likely carnelian
Carnelian: orange-red chalcedony, microcrystalline quartz (SiO₂)
gemstone
Emerald in Matrix
Beryl (Be3Al2(SiO3)6) embedded in schist or pegmatite host rock
mineral
Black Onyx
Silicon dioxide (SiO2) with parallel banded structure
Mineral (variety of chalcedony)
Fossiliferous Limestone (Chert/Clay mixed)
Calcium Carbonate (CaCO3) / Silicon Dioxide (SiO2)
sedimentary
Granite
Phaneritic Felsic Igneous Rock (composed主に of SiO2, Al2O3, K2O, Na2O)
igneous
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Purple Turquoise (Composite Mojave Turquoise)
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper aluminum phosphate composite)
mineral
Rainbow Pyrite
Iron Sulfide (FeS2) with iridescent oxidation
mineral
Jasper / Flint / Chert
Microcrystalline Quartz (SiO2)
sedimentary
Aura Amethyst (Dyed/Coated)
Titanium-treated Silicon Dioxide (SiO2)
mineral
Quartz (Yellow / Citrine Pebble)
Silicon Dioxide (SiO2)
mineral
Diamond
C (Carbon)
mineral
Prasiolite
Silicon Dioxide (SiO2) with iron impurities
mineral
Yellow Quartz (or Citrine Quartz)
Silicon Dioxide (SiO2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Black Sapphire (Basaltic Blue Sapphire)
Corundum (Al2O3)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Scoria (vesicular basalt)
Scoria; vesicular mafic volcanic rock, commonly basaltic in composition
igneous