Quartzite Pebble
Quartzite (SiO2)
metamorphic
Category
Synthetic Glass
Browse synthetic glass specimens identified by the Rock Identifier community.
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Yellow Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic Rock (Mainly SiO2)
metamorphic
Limestone with Chert
Calcium Carbonate (CaCO3) with Silica (SiO2) inclusions
sedimentary
Quartzite (River Stone)
Silicon Dioxide (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite (with Quartz Veining)
Quartzite (SiO2)
metamorphic
Quartzite (Gold/Yellow)
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Limestone (River Pebble)
Calcium Carbonate (CaCO3)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Green Adventurine
SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)
mineral
Yellow Aventurine
Silicon Dioxide (SiO2) with inclusions
mineral
Slag (Industrial Glass Slag)
Amorphous Silicate Glass (often containing Al, Ca, Mg, and Ti oxides)
Mineraloid (Industrial byproduct)
Chert (Jasper/Chalcedony)
Silicon dioxide (SiO2) - Microcrystalline quartz
sedimentary
Obsidian
Obsidian (Volcanic Glass, primarily SiO2)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Crystal)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Polished mahogany obsidian (likely)
Volcanic glass; primarily silica-rich rhyolitic glass (SiO₂), with iron oxides
igneous
Quartzite Pebble
Quartzite (composed primarily of SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
White Quartz Pendant
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble
SiO2
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon Dioxide (SiO2), Microcrystalline Quartz
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
mineral
Quartz (White/Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz with Associated Minerals
Silicon Dioxide (SiO2)
mineral
Quartz (Pebble)
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
mineral
White Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Diamond (or Diamond Simulant)
Carbon (C) or Zirconium dioxide (ZrO2) for CZ
gemstone
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Raw Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite)
metamorphic