Rhinestone
Artificial Glass/Crystal
gemstone
Category
Crystal
Browse crystal specimens identified by the Rock Identifier community.
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) with Quartz crystals
sedimentary
Amethyst crystal
Silicon Dioxide (SiO2) with iron impurities
mineral
Clear Quartz / Rock Crystal
Silicon Dioxide (SiO2)
mineral
Natural Diamond (Faceted)
Diamond (pure carbon crystal, C)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2) / Rock Crystal
mineral
Clear Quartz
Silicon Dioxide (SiO2) / Rock Crystal
mineral
Diamond (Macled/Crystal fragment)
Carbon (C), isometric crystal system
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
gemstone
River Pebble (likely Quartzite or Chert)
Silicon Dioxide (SiO2) crystal conglomerate
sedimentary or metamorphic
Pallasite Meteorite (Sliced and Polished)
Pallasite (Iron-Nickel Matrix with Olivine crystals)
mineral
Amethyst (Pale/Raw Crystal)
Silicon dioxide with iron impurities (SiO2)
mineral
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) with Quartz Crystals on Clastic Sedimentary Rock
sedimentary
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz Crystal
Silicon dioxide (SiO2)
mineral
Rhinestone (or glass crystal)
Silicon dioxide (if glass) / Various
Mineral/gemstone imitation
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
mineral
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
mineral
Clear Quartz Crystal
Silicon dioxide (SiO2)
mineral
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
gemstone
Dyed Quartz Crystals
Silicon Dioxide (SiO2) with artificial pigment
mineral
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
gemstone
Amethyst Crystal Point
SiO2 (Silicon Dioxide with iron impurities)
mineral
Amethyst (Rough Crystal)
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz Crystal Cluster (with Selenite Satin Spar)
Silicon Dioxide (SiO2)
mineral
Faceted Quartz (Rock Crystal)
Crystalline Silicon Dioxide (SiO2)
gemstone
Gypsum (Selenite crystals in Halite/Clay matrix)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Aragonite (Onyx Marble)
Calcium Carbonate (CaCO3), Orthorhombic crystal system
mineral
Clear Quartz (Crystal Quartz)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
gemstone
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Faceted Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
gemstone
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
gemstone