Quartz Pebbles and Agates
Silicon Dioxide (SiO2)
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Quartz Pebbles and Agates
Silicon Dioxide (SiO2)
Red Jasper
Jasper (Silicon Dioxide) - SiO2
Red Jasper
Silicon dioxide with hematite impurities (SiO2 + Fe2O3)
Citrine
Silicon Dioxide (SiO2)
Caribbean Calcite
Calcium Carbonate with Argonite (CaCO3)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Chrysoprase
Chalcedony (cryptocrystalline SiO2 variety)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz with Inclusions
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Pink Feldspar
Orthoclase Feldspar (KAlSi3O8)
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8); variety of Orthoclase Feldspar
Milky Quartz
Silicon Dioxide (SiO2)
Agate (specifically Oco or Banded Agate)
Agate (a variety of Chalcedony), SiO2 (Silicon Dioxide)
Blue Sapphire
Corundum (Al2O3)
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Amazonite
Microcline (variety Amazonite), K(AlSi3O8)
Orange Sapphire
Corundum (Al2O3 with trace elements)
Granitic Pegmatite Intrusion in Host Rock
Pegmatite dike in amphibolite or schist
Amazonite
KAlSi3O8 (Potassium aluminum silicate - blue-green variety of Microcline)
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Quartz
Silicon Dioxide (SiO2)
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Carnelian (Orange Agate/Chalcedony)
Silicon Dioxide (SiO2) - variety of Chalcedony
Clear Quartz
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Quartz (Raw Specimen)
Silicon Dioxide (SiO2)
Amazonite
Microcline (KAlSi3O8) with trace Lead (Pb)
Milky Quartz
Silicon Dioxide (SiO2)
Rainbow Moonstone
White Labradorite (Plagioclase Feldspar), (Na,Ca)(Al,Si)4O8
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Carnelian (Orange Chalcedony)
Silicon Dioxide (SiO2)
Grey Agate (Tumbled)
Silicon Dioxide (SiO2)
Carnelian Agate
Silicon dioxide (SiO2) with iron impurities
Agate
Silicon dioxide (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Polished white agate or chalcedony bead
Microcrystalline quartz (SiO₂), likely chalcedony/agate with iron-oxide staining or a brown mineral inclusion
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
Blue Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz Crystal
Silicon Dioxide (SiO2)