Rose quartz
Quartz (silicon dioxide, SiO₂), pink variety
mineral
Category
Not A Rock (Synthetic Material)
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Yellow Jasper with Red Inclusion
Silicon Dioxide (SiO2) with Iron Oxides
sedimentary
Yellow Jasper
SiO2 (Microcrystalline Quartz)
mineral
Quartz Pebble (with probable inclusions or staining)
Quartz (Silicon Dioxide - SiO2)
mineral
Scoria (Lava Rock)
Scoria (Extrusive Igneous Rock / Mafic Silicates)
igneous
Sandstone (Ferruginous)
Arenite with Iron Oxide (Fe2O3) cement
sedimentary
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Sandstone (River Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Limonitic/Arkose)
Sandstone (primarily SiO2 with FeO(OH)·nH2O)
sedimentary
Ocean Jasper
Orbicular Jasper / Chalcedony (SiO2)
Mineral
Sandstone (Red)
Arenite (SiO2 with Fe2O3)
sedimentary
Iron-rich quartzite or quartz-bearing metamorphic rock
Quartzite, predominantly SiO₂, with iron-oxide staining (hematite/goethite)
metamorphic
Quartzite Pebble (with mineral veining)
Metamorphic Quartzite (SiO2)
metamorphic
Granite
Phaneritic intrusive igneous rock (consisting mainly of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Sandstone (Pebble)
Arenite (primarily SiO2)
sedimentary
Siltstone or Fine-grained Sandstone pebble
Siltstone (primarily SiO2 with clay minerals)
sedimentary
Shale (with Iron Oxide staining)
Fissile Mudstone (primarily Quartz and Clay minerals)
sedimentary
Flower Jasper
Agatized Fossil Coral / Chalcedony (SiO2)
sedimentary
Granite
Granite (a felsic intrusive igneous rock)
Igneous Rock
Basalt
Mafic Igneous Pebble
igneous
Sandstone
Quartzose Sandstone / Lithic Sandstone
sedimentary
Sandstone
Sandstone (SiO2 dominated)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Ocean Jasper
SiO2 (Silicon Dioxide) - Chalcedony variety
mineral
Laterite
Laterite (Ferricrete / Alcrete)
sedimentary
Sandstone (likely Arkosic or Quartzose)
Arenite (SiO2 based with mineral inclusions)
sedimentary
Carved serpentine wing sculpture
Serpentine-group rock, chiefly antigorite/lizardite: Mg3Si2O5(OH)4
metamorphic
Greenstone / Greenschist
Greenschist (composed of Chlorite, Epidote, and Actinolite)
metamorphic
Chert (specifically Novaculite or Porcelainite)
Microcrystalline to Cryptocrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Microcrystalline or cryptocrystalline quartz (SiO2)
sedimentary
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Synthetic Glass (Man-made)
Dinosaur Fossil Tooth
Vertebrate Fossilized Tooth
fossil
Granite
Phaneritic Igneous Rock (composed of quartz, alkali feldspar, and plagioclase)
igneous
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Chert (Basanite / Jasperoid)
Microcrystalline Quartz (SiO2)
sedimentary
River Pebbles and Cobbles
Mixed Siliciclastic Sediments (Quartzite, Chert, and Sandstone clasts)
sedimentary
Siltstone
Siltstone (primarily composed of quartz and clay minerals)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Sandstone (Ferruginous)
Arenite (Fe-rich)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Quartzite Cobble
Quartzite (primarily SiO2)
metamorphic