Green Banded Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Green Banded Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
Jasper (Red Jasper with Quartz veins)
Jasper (Silicon Dioxide, SiO2)
Pink Granite
Granite (Felsic Plutonic Rock)
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Serpentine (variety: Serpentine Rock)
Antigorite, Lizardite, or Chrysotile; formula generally (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Quartzite
Quartzite (primarily SiO2)
Aventurine Quartz
Silicon Dioxide (SiO2) with inclusions (typically Fuchsite/Mica)
Red Jade (Dyed Quartzite)
Silicon Dioxide (SiO2) - variety Quartzite
Unakite (Tumbled)
Unakite (altered granite)
Orange Quartzite (Tumbled)
Quartzite (SiO2)
River Stone (Granitic Gneiss)
Foliated Granitic Gneiss
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
Quartz (Amethyst variety)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Quartzite with Quartz Vein
Quartzite (SiO2)
Green Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Quartzite Cobble
Quartzite (primarily SiO2)
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
Quartzite
Quartzite (SiO2)
Amethyst
Amethyst is a variety of Quartz (SiO₂)
Orange Quartzite (Tumbled Beach Pebble)
Quartzite (primarily SiO2)
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
Quartzite
Quartzite (composed primarily of SiO2)
Quartzite
Quartzite (primarily SiO2)
Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
Banded Agate (Lace Agate)
Agate (Variety of Cryptocrystalline Quartz), SiO2
Gneiss
Gneiss (High-grade Metamorphic Rock)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Milky Quartz (Druzy Geode fragment)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Jasper
Silicon dioxide (SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Emerald In Matrix (Quartz/Calcite)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Quartzite
Quartzite (SiO2)
Pyrite
Iron Disulfide (FeS2)