Carnelian
Carnelian (Silicon Dioxide - SiO2 with iron oxide impurities)
Category
Browse mineral (specifically, a variety of the mineral species pyrope almandine garnet) specimens identified by the Rock Identifier community.
Carnelian
Carnelian (Silicon Dioxide - SiO2 with iron oxide impurities)
Blue Chalcedony
Silicon Dioxide (SiO2)
Agate
Chalcedony (Silicon Dioxide, SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Honey Calcite (Orange Onyx)
Calcium Carbonate (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Serpentinite
Serpentinite (complex silicate minerals including Lizardite, Antigorite, and Chrysotile)
Silver (Native Silver/Alloy Specimen)
Ag (Native Silver element), specifically a 90% Ag / 10% Cu alloy
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Granite
Granite
Rose Quartz
SiO2 (Silicon Dioxide with trace amounts of titanium, iron, or manganese)
Botryoidal Chalcedony
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Granite
Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8), and Mica)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Chert (specifically Flint or Common Chert node)
Silicon Dioxide (SiO2)
Tourmaline (likely Schorl)
Tourmaline Group Mineral (e.g., Schorl for black varieties); (Na,Ca)(Li,Mg,Fe,Mn,Al)3Al6(BO3)3Si6O18(OH)4
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Hematite
Hematite (Fe2O3)
Jasper (Green)
Silicon Dioxide (SiO2) with impurities
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Red Jasper (Chalcedony)
Silicon Dioxide (SiO2) with iron oxide inclusions
Angelite
Anhydrite (Calcium Sulfate, CaSO4)
Milky Quartz
Silicon Dioxide (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon dioxide (SiO2)
Banded Agate
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Green Chalcedony (likely Chrysoprase or Green Onyx)
Silicon Dioxide (SiO2) with trace nickel or chromium inclusions
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)