Flint
Microcrystalline quartz (SiO2)
sedimentary
Community gallery
All rocks & minerals
Every specimen the Rock Identifier community has discovered, from desert agates to deep-sea basalts.
Explore the rock & mineral encyclopedia
View all →
Flint
Silicon dioxide (SiO2)
sedimentary
Flint / Chert Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Flint
Microcrystalline Quartz (SiO2)
sedimentary
Amber
Fossilized tree resin
gemstone
Hag Stone
Perforated Sedimentary Rock / Flint / Limestone
sedimentary
Jasper Pebble
Microcrystalline Quartz (Chalcedony), SiO2
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Flint Pebble
SiO2 (Microcrystalline Quartz / Chalcedony)
sedimentary
Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
sedimentary
Granite
Intrusive Igneous Rock
igneous
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
sedimentary
Chert (or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Quartz Arenite / Sedimentary Rock
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Fossilized Shark Tooth
Chondrichthyes (Class)
fossil
Flint
SiO2 (Microcrystalline Quartz / Chert)
sedimentary
Flint / Chert (Hag Stone)
Silicon Dioxide (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Flint
SiO2 (Cryptocrystalline Quartz)
sedimentary
Quartzite with Quartz Veins
Metamorphic Quartzite (SiO2)
metamorphic
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Amber
Fossilized tree resin (C10H16O)
gemstone
Agate
Silicon Dioxide (Chalcedony), SiO2
gemstone
Brecciated Quartz
Silicon Dioxide (SiO2) with iron oxide cement
sedimentary
Flint / Chert
Silicon dioxide (SiO2)
sedimentary
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Basalt Pebble
Extrusive Igneous Rock
igneous
Fossiliferous Flint or Chert with Bryozoan Fossils
Sedimentary cryptocrystalline quartz (SiO2) with fossil inclusions
sedimentary
Jasper Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Quartz-veined Metamorphic Pebble
Silicate-rich metamorphic rock with quartz veins (SiO2)
metamorphic
Fossiliferous Limestone
Biogenic Sedimentary Rock (primarily CaCO3)
sedimentary
Sandstone
Sedimentary Rock (Quartzose Sandstone)
sedimentary
Quartz Vein in Basalt or Porphyry
Silicate-veined volcanic rock
igneous
Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
sedimentary
Flint with Fossil
Silicon dioxide (SiO2) microcrystalline quartz with fossiliferous inclusions
sedimentary
Basalt Pebble
Extrusive igneous rock
igneous