Blue Calcite
Calcium Carbonate (CaCO3)
Category
Browse igneous or metamorphic specimens identified by the Rock Identifier community.
Blue Calcite
Calcium Carbonate (CaCO3)
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
Green Calcite
Calcium Carbonate (CaCO3)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Citrine
Silicon dioxide (SiO2)
Blue Quartz
Quartz (Silicon Dioxide) with inclusions, SiO2
Peach Moonstone
Feldspar (KAlSi3O8) with inclusions
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
Blue Calcite
Calcium Carbonate (CaCO3)
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
Tumbled Quartz (Snow Quartz)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Citrine
Silicon dioxide (SiO2)
Greasy Quartz (likely carved Milky Quartz or Aventurine)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Gravel Pebble)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Bornite
Bornite (Cu5FeS4)
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Quartz (specifically Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Prasiolite
Silicon Dioxide (SiO2)
Rainbow Moonstone (White Labradorite)
White Labradorite (Feldspar variety, (Na,Ca)(Al,Si)4O8)
Quartz (with Iron staining)
Silicon Dioxide (SiO2)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Quartz-rich gravel fragment
Quartz (silicon dioxide, SiO₂), possibly with feldspar or carbonate inclusions
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Weathered quartz-rich pebble
Milky quartz, chiefly silicon dioxide (SiO₂), possibly with iron-oxide staining and minor feldspar