Quartz Geode
Silicon Dioxide (SiO2)
mineral
Category
Crystal
Browse crystal specimens identified by the Rock Identifier community.
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Limonite (with Pyrite)
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Jasper (SiO2) with iron hydroxide inclusions
sedimentary
Quartz (Yellow/Citrine variety)
Crystalline Silicon Dioxide (SiO2)
mineral
Shiva Lingam
Cryptocrystalline Quartz (Jasproid/Chalcedony mix)
sedimentary
Blue Goldstone
Aventurine Glass
Man-made mineral simulant (Glass)
Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
mineraloid / man-made glass
Ametrine
Ametrine (SiO2 - Silicon Dioxide with varied iron impurities)
mineral
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Rough Quartz (var. Citrine or Yellow Quartz)
Silicon Dioxide (SiO2)
mineral
Desert Rose
Selenite Rose (Gypsum: CaSO4·2H2O)
mineral
Schist with Schorl (Black Tourmaline)
NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)
metamorphic
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal Fragments)
Silicon Dioxide (SiO2)
mineral
Amethyst Quartz Druse
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Massive Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky and Bull Quartz)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Volcanic glass (SiO2 + impurities)
igneous
Clear Quartz crystals on a Matrix base (Geode fragment)
Silicon Dioxide (SiO2)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Quartz (Silicon Dioxide) - SiO2
mineral
Ametrine
Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)
mineral
Smoky Quartz (with possible Garnet inclusions)
Silicon Dioxide (SiO2)
mineral
Porphyritic Basalt
Porphyritic Basalt (with plagioclase phenocrysts)
igneous
Celestine (or Celestite)
Strontium sulfate (SrSO4)
mineral
Clear Quartz (Druzy/Crystal Cluster)
Silicon Dioxide (SiO2)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Quartz (likely Clear Quartz or Rock Crystal)
Quartz (SiO2)
Mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral