Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Category
Mineral (Specifically A Gemstone Variety)
Browse mineral (specifically a gemstone variety) specimens identified by the Rock Identifier community.
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Aragonite Star Cluster
Aragonite (Calcium Carbonate - CaCO3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Jasper (var. Ocean or Polychrome Jasper)
Silicon Dioxide (SiO2) with iron and mineral inclusions
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Carnelian (Red Chalcedony)
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Amber
Succinite (specifically for Baltic Amber), Formula: C10H16O
Organic Gemstone (often associated with Sedimentary sequences)
Pink Tourmaline in Quartz Matrix
Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) with Quartz (SiO2)
mineral
Carnelian
SiO2 (Silicon Dioxide) - Carnelian variety of Chalcedony
mineral
Ocean Jasper
Spherulitic Chalcedony (SiO2)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
mineral
Amethyst
Amethyst (SiO2 - Silicon Dioxide with iron impurities)
Mineral
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
N/A (This is a digital image of a bar graph)
Digital Data Visualization (Bar Chart)
This is not a rock or mineral
Jasper Agate (specifically Brecciated Jasper)
Silicon Dioxide (SiO2) with iron oxide and clay impurities
sedimentary
Amethyst (Quartz Variety)
Amethyst (Silicon Dioxide - SiO2 with ferric iron impurities)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Red Jasper (Chert)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Red Jasper
Silicon Dioxide (SiO₂)
sedimentary
Moonstone
Adularia or Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8), specifically with lamellar exsolution of albite and orthoclase.
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Bloodstone (also known as Heliotrope)
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Amethyst (Pale/Light Variety)
Quartz (Silicon Dioxide) with Iron impurities - SiO2
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Carnelian (Orange Chalcedony)
Silicon Dioxide (SiO2) with iron oxide impurities
mineral
Basalt
Basalt (Mafic volcanic rock)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar (Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Agate
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Blue Topaz (specifically London Blue or Swiss Blue based on color saturation)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
mineral
Agate (specifically, multi-colored or pastel-dyed agate)
Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Jasper, possibly Brecciated Jasper or Ocean Jasper due to patterns and color
Silicon Dioxide (SiO2), a variety of Chalcedony
Sedimentary Rock
Blue Banded Agate (Dyed)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Dyed Pink Agate (Crackled)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Jasper (likely Ocean Jasper or Variegated Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary
Quartz (Chatoyant or Milky variety)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide / Chalcedony (SiO2)
Sedimentary
Chevron Amethyst
Quartz (SiO2) with patterned Amethyst and White Quartz/Milky Quartz
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral