Blue Kyanite
Kyanite (Al2SiO5)
mineral
Category
Synthetic (Ceramic)
Browse synthetic (ceramic) specimens identified by the Rock Identifier community.
Learn about Synthetic (Ceramic) in the encyclopedia
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Yellow Quartzite
Quartzite (SiO2)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Quartz / Feldspar Specimen
SiO2 (Quartz) / KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8 (Feldspar Group)
mineral
Quartz geode / iron-stained quartz vein rock
Quartz (SiO₂), likely with iron oxides and minor feldspar or host-rock minerals
mineral
Milky quartz
Quartz, silicon dioxide (SiO₂)
mineral
Tumbled quartz pebble
Quartz (SiO₂), likely milky or fractured rock crystal
mineral
Milky quartz
Quartz, silicon dioxide (SiO₂)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Silica (SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si)4O10(F,OH)2)
mineral
Quartz Pebble (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Feldspar (Orthoclase)
Potassium Feldspar (KAlSi3O8)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Chert (White Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Silicon Dioxide (SiO2)
metamorphic
Quartzite pebble
Quartzite (SiO2)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Chert (specifically Flint or Common Chert)
Silicon Dioxide (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (often called Flint when dark or worked)
Cryptocrystalline silica (SiO2)
sedimentary
White Opal
Hydrated Silica (SiO2·nH2O)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Shale
Shale (claystone/mudstone)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Likely smoky quartz-bearing rock or quartz crystal
Quartz, silicon dioxide (SiO₂), possibly smoky quartz with iron- or irradiation-related coloration
mineral