Ocean Jasper
Silicon dioxide with impurities (SiO2 + impurities)
sedimentary
Category
Mineraloid (Man Made Origin)
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Quartzite pebble
Quartzite (SiO2 based)
metamorphic
Quartzite Pebble
Quartzite (principally Silicon Dioxide, SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Granite
Granite (dominated by Quartz, Alkali Feldspar, and Plagioclase)
igneous
Limestone (Micrite/Chalky variety)
Calcium Carbonate (CaCO3)
sedimentary
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Scoria
Scoria (a vesicular basalt or andesite)
igneous
Tiger's Eye (Rough)
Macrocrystalline Quartz (SiO2 with inclusions of Crocidolite)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Epidosite
Epidosite (consisting primarily of Epidote Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz SiO2)
metamorphic
Gold Ore in Quartz
Native Gold (Au) in Quartz (SiO2)
mineral
Cubic Zirconia (Simulated Diamond)
Zirconium dioxide (ZrO2)
mineral
Vesicular Basalt (or Scoria)
Basalt (Aphanitic-Vesicular Mafic Igneous Rock)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Azurite in Gossan
Azurite (Cu3(CO3)2(OH)2) in Limonite/Goethite matrix
mineral
Ocean Jasper
Spherulitic Chalcedony (SiO2)
sedimentary
Amber
Succinite (approximate formula C10H16O)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Chert (and Petrified Wood)
Silicon Dioxide (SiO2)
sedimentary
River Stone (River Rock)
Smooth Clastic Sedimentary Rock
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Tiger's Eye (Rough)
Pseudomorph of Quartz after Crocidolite (SiO2 with FeOOH inclusions)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Tiger's Eye
SiO2 (Silicon Dioxide)
metamorphic
Greasy Quartz (likely carved Milky Quartz or Aventurine)
Silicon Dioxide (SiO2)
mineral
Ocean Jasper
Orbicular Jasper (Silicon Dioxide with impurities), SiO2
mineral
Greenstone (Epidote/Chlorite Rich Rock)
Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))
metamorphic
Pyrite with Limonite/Goethite Alteration (Pseudomorph)
Iron Sulfide (FeS2) transitioning to Hydrated Iron Oxides (FeO(OH)·nH2O)
mineral
Yellow Quartzite (River Pebble)
Quartzite (primarily SiO2)
metamorphic
Quartzite with Chert inclusions
Metamorphosed Quartz-rich Rock (SiO2)
metamorphic
Quartz Geode
Silicon Dioxide (SiO2) in Geode form
sedimentary
Marble (polished)
Recrystallized Calcite (CaCO3)
metamorphic
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Lazulite
Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone (likely Arkosic or Lithic Sandstone)
Arenite (SiO2 based with mineral inclusions)
sedimentary
Siltstone or Mudstone
Argillaceous sedimentary rock
sedimentary