Fluorite Octahedron
Fluorite (Calcium Fluoride, CaF2)
Category
Browse mineral; variety of quartz specimens identified by the Rock Identifier community.
Fluorite Octahedron
Fluorite (Calcium Fluoride, CaF2)
Green Fluorite (Beaded)
Fluorite (Calcium Fluoride, CaF2)
Iolite (Cordierite)
Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Fluorite Bracelet (light green beads) and possibly Lavender Jadeite (purple bead)
Fluorite: CaF₂ (Calcium Fluoride); Jadeite: NaAlSi₂O₆ (Sodium Aluminum Silicate)
Chert (Lightly weathered variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Blue Quartzite
Quartzite (primarily SiO2) with inclusions like Dumortierite or Crocidolite
Blue John Fluorite
Fluorite (Calcium Fluoride), CaF2
Chert (Cherty Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Graphic Granite
Graphic Pegmatite
Fluorite (Purple/Blue variety)
Calcium Fluoride (CaF2)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Milky Quartz (Stained with Iron)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz Druse (on Chalcedony/Agate base)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Quartz (Iron-Stained Quartz Pebble)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Milky Quartz Pebble)
Silicon Dioxide (SiO2)
Chert (Jasper/Agate variety)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Chert (varieties include Flint and Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (and Flint variant)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
Native Gold
Gold (Au)
Gneiss (Cobble)
Gneiss
Chert Nodule
Microcrystalline Quartz (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Chert (specifically Pink Chert or Jasperized Chert)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
White Quartz
Silicon Dioxide (SiO2)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Milky Quartz (with potential inclusion of feldspar)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz (or Iron-Stained Quartz)
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)