Chert (and Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Category
Organic Gem Material (Botanical)
Browse organic gem material (botanical) specimens identified by the Rock Identifier community.
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline silica (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Smoky Quartz (with complementary stones in jewelry setting)
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Chert (Jasper/Agate variety)
Silicon Dioxide (SiO2)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium or Manganese
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Chert (variously identified as Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Lightly weathered variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Nodule)
Chert (SiO2)
sedimentary
Chert (and its variety Flint)
Silicon Dioxide (SiO2) - Microcrystalline or cryptocrystalline Quartz
sedimentary
Asphalt
Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)
Sedimentary
Chert (Jasper/Agate variety)
Microcrystalline quartz (SiO2)
sedimentary
Chert (Jasper/Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Diamond
Carbon (C)
mineral
Chert (Smooth River Pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
Mineral / Fossil
Chert (Chert Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert Pebble (Flint)
Microcrystalline/Cryptocrystalline Quartz (SiO2)
sedimentary
Turquoise and Red Coral
Turquoise: CuAl6(PO4)4(OH)8·4H2O; Red Coral: Corallium rubrum (organic gemstone)
mineral
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper focus)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
sedimentary
Garnet (Almandine variety)
Almandine, Fe3Al2(SiO4)3
Mineral
Brachiopod Fossil in Limestone
Phylum Brachiopoda (likely Order Spiriferida), CaCO3 (Calcite)
sedimentary
Chert (variously identified as Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Petrified Wood
Silicified wood (Quartz/Chalcedony - SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2 - Silicon Dioxide)
mineral
Chert (Iron-stained)
Chert (Microcrystalline and Cryptocrystalline Quartz, SiO2)
sedimentary
Blue Topaz (facetted in jewelry)
Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)
mineral
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary