Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Category
Not A Rock
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Citrine (Heat-Treated Amethyst)
Silicon Dioxide (SiO2)
mineral
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Gneiss with Quartz Vein
Gneiss containing Quartz (SiO2) filler
metamorphic
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide impurities
mineral
Graveler (Fictional Interpretation)
Mons calcarius anthropomorphus
igneous
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Red Jasper
Silicate (SiO2 with Hematite impurities)
sedimentary
Chert (River Pebble)
Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Gneiss
Gneiss
metamorphic
Brachiopod Fossil (Spiriferid)
Phylum Brachiopoda, Order Spiriferida (CaCO3 - Calcium Carbonate)
sedimentary (fossilized organic remains)
Sandstone (Greywacke/Siltstone variant)
Clastic Sedimentary Rock (composed primarily of Quartz SiO2 and Feldspar)
sedimentary
Milky Quartz (among River Rock)
Quartz (Silicon Dioxide, SiO2)
Mineral
Jasper (with Agate/Chalcedony inclusions)
Silicon Dioxide (SiO2)
sedimentary
Pink Granite / Gneiss
Felsic Plutonic Rock (Granite) with Gneissic banding
igneous / metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Pink Granite
Felsic intrusive igneous rock (Quartz, K-feldspar, Plagioclase)
igneous
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)
igneous
Granite Gneiss
Felsic Gneiss
metamorphic
Jasper (Red/Yellow)
Silicon Dioxide (SiO2) with impurities
sedimentary
River Stone (likely Quartzite or Chert)
Recrystallized Silicon Dioxide (SiO2)
metamorphic
Jasper
Silicon dioxide / Chalcedony (SiO2)
Sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Granite
Plutonic felsic igneous rock
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Jasper (Imperial Jasper style)
Silicon Dioxide (SiO2) with impurities
sedimentary
Tree Agate
Silicon Dioxide (SiO2) - Dendritic Agate/Chalcedony
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Tiger's Eye
SiO2 (Silicon Dioxide with inclusions of Goethite/Limonite)
Metamorphic
Tiger's Eye (likely Hawk's Eye variant)
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Chert (Jasper/Chalcedony variety)
Microcrystalline Quartz (SiO2)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
mineral
Devil's Toenail
Gryphaea (extinct genus of foam oysters, typically composed of Calcite CaCO3)
sedimentary
Petoskey Stone
Hexagonaria percarinata
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
sedimentary