Pyrite
Iron Disulfide (FeS2)
mineral
Category
Man Made Glass (Often Grouped With Minerals In Lapidary)
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
Quartz Geode
Silicon Dioxide (SiO₂)
mineral
Epidote in Quartz
Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz (Pebble)
Silicon Dioxide (SiO2)
mineral
Charoite
(K,Sr,Ba,Ca)15-16(Na,Ca)8(Si,Al)24O60(OH,F)4 · nH2O (Hydrated silicate of potassium, calcium, and sodium)
metamorphic
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Chert (Nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Raw Citrine (Yellow Quartz)
Citrine / Silicon Dioxide (SiO2)
mineral
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
mineral
Peridot (Olivine)
Olivine ((Mg,Fe)2SiO4)
Mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Rose Gold (Copper-Gold Alloy)
Aurum-Cuprum Alloy (Au-Cu)
mineral (native element alloy)
Yellow Quartz (Chalcedony/Agate)
Silicon Dioxide (SiO2)
Mineral
Quartzite
Quartzite (SiO2)
metamorphic
Chert (Nodule)
Silicon dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Chert (often referred to as Flint)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Jasper Agate (Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Banded Chert
Silicon Dioxide (SiO2)
sedimentary
![Banded Iron Formation (BIF) (Banded Iron Formation (composed primarily of Hematite [Fe2O3], Magnetite [Fe3O4], and Chert [SiO2])) — sedimentary](https://media.rockidentification.com/31228b61-1a48-4b85-8684-c24240e51d92-thumbnail.jpg)
Banded Iron Formation (BIF)
Banded Iron Formation (composed primarily of Hematite [Fe2O3], Magnetite [Fe3O4], and Chert [SiO2])
sedimentary
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F
mineral
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Orange Quartzite
Quartzite (primarily SiO2 with Hematite impurities)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst (Rose-tinted/Pale variety)
Silicon Dioxide (SiO2) with iron impurities
mineral
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Blue Quartzite
Quartzite with inclusions (SiO2)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
mineral
Yellow Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Red Jasper (with Quartz Veins)
Jasper (var. chert, SiO₂)
Sedimentary Rock (technically chert, a microcrystalline quartz)
Amethyst Quartz (Amethyst Geode)
Silicon Dioxide (SiO2) with iron impurities
mineral
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Orange Aventurine (Sunstone-style Quartzite)
Silicon Dioxide (SiO2) with Goethite or Hematite inclusions
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides (Goethite)
sedimentary
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions (Hematite/Limonite)
mineral
Chert (variant Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt (containing secondary minerals like Quartz, Zeolites, or Calcite)
igneous
Banded Agate (specifically Red Agate or Sardonyx variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Banded Chert (River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Fossiliferous Chert (with Brachiopod or Mollusk fragments)
Silicon dioxide (SiO2) with Calcium Carbonate (CaCO3) inclusions
sedimentary