Banded Agate (specifically shades of Carnelian Agate)
Silicon Dioxide (SiO2)
mineral
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is A Cryptocrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is a cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
mineral
Green Aventurine
Quartz (Aventurine variety) - SiO₂ with Fuchsite inclusions
Mineral
Quartz Geode/Cluster
Quartz (SiO2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Jasper pebble
Jasper (Silicon Dioxide, SiO2)
sedimentary
Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)
Quartz (SiO₂)
Mineral
Quartz (specifically Milky or Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Jasper with Quartz (Agate/Jasper mix)
Silicon Dioxide (SiO2) with iron oxide inclusions
Sedimentary
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Jasper
Jasper (Silica/Quartz) - SiO2
mineral
Carnelian (Orange Agate)
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Moss Agate
Chalcedony (Silicon Dioxide - SiO2) with inclusions
Mineral
Chert (Yellow/Tan variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Red Jasper
Silicon dioxide (SiO2) with iron inclusions
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Quartzite (Milky Quartz Cobble)
Silicon Dioxide (SiO2)
Metamorphic
Tiger's Eye (commonly referred to as Blue/Gold Tiger's Eye)
Tiger's Eye is a variety of Chalcedony (cryptocrystalline quartz), SiO2, exhibiting chatoyancy. The blue variety is often called Hawk's Eye.
Metamorphic Rock (formed from a fibrous crocidolite asbestos)
Carnelian (Chalcedony)
Silicon Dioxide (SiO2) with Iron Oxide impurities
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Green Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Blue Quartz (Blue Aventurine)
Silicon Dioxide (SiO2) with inclusions (typically crocidolite or dumortierite)
mineral
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) - Microcrystalline Chalcedony
sedimentary
Bull Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
mineral
Chert (often called Flint when dark or found in chalk)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Green Jasper
Jasper (variety of Microcrystalline Quartz, SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline quartz (SiO2)
sedimentary
Chalcedony / Agate
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
Mineral
Black Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Jasper (brecciated or orbicular variety)
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary/mineral
Quartz (specifically Milky or Clear Chunk)
Silicon Dioxide (SiO2)
mineral
Dalmatian Stone
Dalmatian Jasper (Aplitic Perthite)
igneous
Cherry Creek Jasper (also known as Red Creek Jasper or Cherry Creek Agate)
Jasper, microcrystalline quartz (SiO₂)
Sedimentary Rock
Purple Banded Agate
Cryptocrystalline Quartz (SiO2)
mineral
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
mineral
Agate
Banded Chalcedony (SiO2)
mineral
Dendritic Agate or Tree Agate
Silicon Dioxide (SiO2) with impurities of manganese or iron oxide
mineral