Agate (Geode nodule fragment)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Category
Browse mineral, variety of quartz specimens identified by the Rock Identifier community.
Agate (Geode nodule fragment)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Pyrite
Iron Sulfide (FeS2)
Tumbled pink quartz (probable rose quartz)
Quartz, silicon dioxide (SiO₂), commonly colored by trace elements and microscopic inclusions
Chalcedony / Quartz Pebble
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Quartz (Silicon Dioxide) - SiO2
Smoky Quartz (Rough Specimen)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
Yellow Quartz Pebble
SiO2 (Silicon Dioxide)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Clear Quartz Crystal
Quartz (Silicon Dioxide - SiO2)
Amazonite
Potassium Aluminum Silicate (KAlSi3O8)
Tumbled quartz pebble
Quartz (silicon dioxide, SiO₂)
Rose Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Tumbled orange chalcedony (likely carnelian)
Microcrystalline quartz, SiO₂; iron-bearing variety commonly termed carnelian
Rose Quartz
Silicon dioxide (SiO2)
Rose Quartz
Silicon dioxide (SiO2)
Quartz (Quartzite)
Silicon Dioxide (SiO2)
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) - Variety of Chalcedony/Quartz
Yellow Quartz (Citrine Quartz variety / Ferruginous Quartz)
Silicon Dioxide (SiO2) with iron inclusions
Smoky quartz
Quartz (SiO₂), brown-to-gray smoky variety
Tumbled reddish-brown stone, likely jasper
Jasper (microcrystalline quartz, SiO₂), possibly red jasper or jasper-rich chert
Milky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz / Agate Pebbles
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
Quartz
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Quartz with Schorl (Black Tourmaline)
Silicon Dioxide (SiO2) with Sodium Iron Aluminum Borosilicate (NaFe3Al6(BO3)3Si6O18(OH)4)
Banded Calcite (often sold as 'Green Onyx')
Calcite (Calcium Carbonate, CaCO3)
Red Sandstone
Clastic Sedimentary Rock