Ametrine
Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)
mineral
Category
Mineral (Specifically A Variety Of Quartz)
Browse mineral (specifically a variety of quartz) specimens identified by the Rock Identifier community.
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Opaque cryptocrystalline variety of Quartz
sedimentary
Quartz (Variety: Rose Quartz/Smoky Quartz mix)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Smoky Quartz (SiO2: Silicon Dioxide)
mineral
Carnelian (a variety of Chalcedony)
Cryptocrystalline Quartz (SiO2) with iron oxide inclusions
Mineral
Milky Quartz
Quartz (SiO₂)
Mineral
Chert (Agatized Chert)
Microcrystalline Quartz (SiO2)
sedimentary
Blue Chalcedony (Tumbled)
Silicon Dioxide (SiO2)
mineral
Chert (often called Jasper in this color)
Microcrystalline quartz (SiO2)
sedimentary
Chert (potentially Flint or Mudstone)
Microcrystalline Quartz (SiO2)
sedimentary
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Small fragments)
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Jasper (likely a variety of Yellow or Mustard Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary (chemically precipitated mineral)
Chalcedony (Common Opal variant or Agate)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides
mineral
Geode (Quartz)
Silicon Dioxide (SiO2)
mineral
Dyed Imperial Jasper (Sea Sediment Jasper)
Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Iron-Stained Quartzite
Recrystallized Meta-Quartzite (primarily SiO2)
metamorphic
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Moss Agate and Druzy Quartz Carving
Cryptocrystalline Silica (SiO2) with impurities
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Quartzite
Quartzite (Primary mineral: Silicon Dioxide, SiO2)
metamorphic
Chert (Flint variety)
Chert (Cryptocrystalline variety of Quartz, SiO2)
sedimentary
Basalt with Vesicle/Vug
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Beryl (likely Aquamarine or Green Beryl)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Limonite/Hematite Ironstone
Goethite-rich Ironstone (FeO(OH) · nH2O)
sedimentary
Fire Opal (Common/Precious in Matrix)
Hydrated Silica (SiO2·nH2O)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace impurities of Titanium, Manganese, or Iron
mineral
Chert (specifically Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Red Chert/Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Rough Green Adventurine
Aventurine (Variety of Quartz, SiO2)
metamorphic
Pumice (specifically a water-worn, weathered variety)
Vesicular volcanic glass
igneous
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2 (Chromium-rich Muscovite)
mineral
Tiger's Eye (specifically Blue/Golden mixed or Hawk's Eye)
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Red Jasper (Chert)
Silicon Dioxide (SiO2) with impure Iron Oxides
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral