Granite / Arkosic Sandstone (Coarse Igneous or Sedimentary Aggregate)
Granite / Quartz-Feldspar Aggregate
Category
Browse igneous and sedimentary specimens identified by the Rock Identifier community.
Granite / Arkosic Sandstone (Coarse Igneous or Sedimentary Aggregate)
Granite / Quartz-Feldspar Aggregate
Quartz (Druzy)
Silicon Dioxide (SiO2)
Basalt with Chert or Jasper Inclusion
Igneous basalt / sedimentary chert nodule
Greenstone (Greywacke or Nephrite Jade variant)
Metamorphosed mafic igneous or sedimentary rock (e.g., Actinolite-Chlorite Schist)
Botryoidal Chalcedony
Chalcedony (SiO2)
Tumbled Agate
Silicon Dioxide (Chalcedony / Quartz)
Quartz (Chalcedony/Agate)
Silicon Dioxide (SiO2)
Agate
Silicon dioxide (Chalcedony), SiO2
Tumbled Agate
Silicon dioxide (SiO2)
Tumbled Agate
Silicon Dioxide (SiO2)
Tumbled Agate
Silicon Dioxide (Chalcedony variety), SiO2
Agate Bookend / Quartz Geode
Silicon Dioxide (SiO2)
Agate
Silicon Dioxide (Chalcedony), SiO2
Agate
Silicon dioxide (Chalcedony), SiO2
Agate
Silicon dioxide (Chalcedony), SiO2
Quartz
Silicon Dioxide (SiO2)
Ruby Zoisite
Anyolite (Calcium aluminium silicate with Chromium/Corundum inclusions)
Agate Nodule
Silicon Dioxide (Quartz/Chalcedony), SiO2
Tumbled Agate
Silicon Dioxide (Chalcedony variety), SiO2
Agate
Silicon Dioxide (Quartz), SiO2
Agate
Silicon Dioxide (Chalcedony), SiO2
Tumbled Agate
Silicon Dioxide (Chalcedony variety), SiO2
Fluorite
Calcium Fluoride (CaF2)
Agate
Silicon Dioxide (Chalcedony), SiO2
Agate
Silicon Dioxide (Chalcedony), SiO2
Epidote with Quartz
Ca2(Al,Fe)3(SiO4)3(OH) (Epidote) / SiO2 (Quartz)
Tumbled Agate
Silicon Dioxide (Quartz variety: Chalcedony)
Blue Agate Slice
Chalcedony (SiO2)
Agate
Silicon dioxide (Chalcedony), SiO2
Agate
Chalcedony (SiO2)
Agate
Silicon dioxide (Chalcedony), SiO2
Chalcedony (Agate)
Silicon Dioxide (SiO2)
Agate
Silicon Dioxide (Chalcedony), SiO2
Agate
Silicon Dioxide (Chalcedony), SiO2
Yellow Chalcedony (likely Carnelian or Agate)
Silicon dioxide (SiO2)
Agate
Silicon Dioxide (Chalcedony variety), SiO2
Agate
Silicon Dioxide (Chalcedony), SiO2
Yellow Agate
Silicon Dioxide (SiO2)
Yellow Chalcedony / Yellow Agate
Silicon Dioxide (SiO2)
Carnelian Agate
Cryptocrystalline Quartz (SiO2) with Iron Oxide impurities
Yellow Chalcedony
Silicon Dioxide (SiO2)
Carnelian / Agate
Silicon Dioxide (SiO2) - Chalcedony