Engineered Quartz (Quartzite look-alike)
Silicon Dioxide (SiO2) composite
mineral-based composite
Category
Organic (Non Rock)
Browse organic (non rock) specimens identified by the Rock Identifier community.
Learn about Organic (Non Rock) in the encyclopedia
View all →
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Black Onyx
Silicon Dioxide (SiO2) - Chalcedony
gemstone
Flint
Chert (SiO2)
sedimentary
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint when found in chalk)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Gold Sheen Obsidian
Obsidian (volcanic glass with SiO2 + gas inclusions)
igneous
Jasper
Silicon Dioxide (SiO2)
sedimentary
Anthracite Coal
Carbon (with organic impurities)
sedimentary
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Fossiliferous Jasper / Miriam Stone / Elephant Skin Jasper
Biogenic Chalcedony / Silicified Fossiliferous Limestone
fossil
Green Jasper
Microcrystalline Quartz (Chalcedony), SiO2
sedimentary
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Snowflake Obsidian
Volcanic Glass with Spherulitic Cristobalite (SiO2)
igneous
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
fossil
Amber
Succinrite (Organic Gemstone)
mineraloid
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (Siliceous Pebble)
Microcrystalline / Cryptocrystalline Quartz (SiO2)
sedimentary
Pyrite (Pseudomorph)
Iron Sulfide (FeS2)
mineral
Chert (Flinty variety)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Chert (Nodule)
Chert (Silicon dioxide, SiO2)
sedimentary
Quartzite Pebble
Metamorphosed Quartz Arenite (SiO2)
metamorphic
Quartziteite (Pink Quartzite)
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Ironstone Concretion
Siderite or Goethite Concretion
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Jasper or Flint variant)
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Quartzite pebble
Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic Quartz (SiO2)
metamorphic
Obsidian
Amorphous volcanic glass (primarily SiO2)
igneous
Black Obsidian
Obsidian (Volcanic Glass)
igneous
Black Obsidian
Amorphous volcanic glass (primarily SiO2)
igneous
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Marble (Sculptural Statue)
Metamorphic Limestone (CaCO3)
metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite with Differential Weathering
Quartzite (SiO2)
metamorphic