Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Category
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron
Sunstone
(Ca,Na)(Al,Si)4O8 (Oligoclase or Andesine)
Chert
Chert (Microcrystalline Quartz, SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartzite
Quartzite (primarily SiO2)
Yellow Jasper
Silicon Dioxide (SiO2)
Chalcedony (Common Agate pebble)
Silicon Dioxide (SiO2)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Milky Quartz with inclusions
Quartz (Silicon Dioxide, SiO2)
Quartzite
Quartzite (SiO2)
Chert (variations include Flint or Jasper)
Chert (chemical sedimentary rock), Quartz (SiO2)
Chert (and Flint variant)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Lepidolite
K(Li,Al)3(Si,Al)4O10(F,OH)2
Quartzite (River-worn Cobble)
Quartzite (composed primarily of SiO2)
Yellow Jasper
Chalcedony (SiO2) with iron oxide inclusions
Chert (often called Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Pink Quartzite
Metamorphosed Quartz Arenite (SiO2)
Chert Nodules / Flint
Crystalline Silica (SiO2)
Quartzite and Jasper Pebbles
Quartzite (re-crystallized Quartz) and Cryptocrystalline Quartz (SiO2)
Orbicular Jasper (Ocean Jasper variant)
Silicon Dioxide (SiO2) with iron oxide inclusions
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Chert (Chalky variety)
Microcrystalline Quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartz Geode
Silicon Dioxide (SiO2)
Chert / Flint
Cryptocrystalline Quartz (SiO2)
Chert (Pink Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Yellow Chert (Chert/Jasper)
Silicon Dioxide (SiO2)
Jasper with Quartz Veining
Silicon Dioxide (SiO2) with impurities such as Fe2O3
Chert (Jasper/Flint variety)
Microcrystalline silicon dioxide (SiO2)
Sandstone (with banding)
Arenite (primarily SiO2)
Chert (Smooth River Pebble)
Silicon Dioxide (SiO2)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Chert (specifically Pink Chert or Jasperized Chert)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Slag
Ferrous slag (by-product of iron smelting)
Banded Calcite (often sold as Caribbean Calcite or Honey Calcite)
Calcium Carbonate (CaCO3)
Bicolor Quartz Tumble
Silicon Dioxide (SiO2)
Red Quartzite
Quartzite (primarily SiO2 with hematite inclusions)
Carnelian
Carnelian (a variety of Chalcedony, SiO2)