Quartz
A very common silicate mineral found in a variety of rock types. It is hard, transparent to opaque, and comes in many colors, including clear, pink (rose quartz), and purple (amethyst).
$3.00
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Tourmaline
Crystalline silicate material mainly composed of aluminium, iron, magnesium, sodium, lithium, or potassium. Known for its wide range of colors, it can appear as virtually every hue in the rainbow.
$500.00
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Magnesite
A magnesium carbonate mineral that is typically white or gray. It is used as a source of magnesium and in refractory materials.
$1.00
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Pyrite
An iron sulfide mineral with a metallic luster and golden-yellow color, often called "fool's gold." It forms in a variety of environments.
$1.00
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Ilmenite
An iron titanium oxide mineral that is black with a metallic to submetallic luster. It is an important source of titanium.
$1.00
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Rutile
A titanium dioxide mineral that is often reddish-brown or black. It is a major source of titanium and is used in pigments and coatings.
$70.00
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Tremolite
Monoclinic calcic amphibole, exhibits a vitreous luster and white streaks. Used commercially as asbestos. Handle with care
$210.00
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Siderite
Iron carbonate mineral, brownish to yellowish color. Serves as an iron ore and is commonly found in sedimentary and hydrothermal environments.
$1.00
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Hornblende
Dark-colored, complex silicate mineral of the amphibole group, found in igneous and metamorphic rocks. Commonly black/green in color.
$2.00
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Sulfur
Bright yellow, nonmetallic element that occurs in native form or in sulfide and sulfate minerals. Utilized in fertilizers and industrial chemicals.
$1.00
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Plagioclase
A series of feldspar minerals that range from albite to anorthite. It is commonly found in igneous rocks and exhibits striations on cleavage surfaces.
$1.00
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Flint
A fine-grained, cryptocrystalline variety of quartz that is typically gray or black. It was historically used for making tools and starting fires.
$1.00
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Muscovite
A silicate mineral from the mica group, with a light-colored, transparent to silvery appearance. It forms in thin, flexible sheets and is used in electrical insulators.
$3.00
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Molybdenite
A molybdenum sulfide mineral with a metallic luster and silver-gray color. It is the primary ore of molybdenum, which is used in steel alloys.
$1.00
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Magnetite
An iron oxide mineral that is strongly magnetic and commonly black. It is a major iron ore and is found in igneous, metamorphic, and sedimentary rocks.
$1.00
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Pyrrhotite
An iron sulfide mineral that is often bronze to dark brown in color and weakly magnetic. It is commonly found in association with nickel and copper deposits.
$1.00
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Galena
A lead sulfide mineral that is the primary ore of lead. It has a metallic luster, high density, and cubic crystal structure.
$1.00
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Kyanite
An aluminum silicate mineral that forms in metamorphic rocks. It is typically blue and has a unique anisotropic hardness (different hardness along different axes)
$72.00
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Chalcopyrite
A copper iron sulfide mineral with a metallic golden-yellow color, often mistaken for gold. It is an important copper ore.
$1.00
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Chromite
A chromium-rich oxide mineral that is the main ore of chromium. It appears black with a metallic to submetallic luster.
$1.00
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Cordierite
A magnesium iron aluminum silicate mineral that exhibits strong pleochroism (changing colors depending on the viewing angle). It is used as a gemstone (iolite) and forms in metamorphic rocks.
$4.00
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Chlorite
A group of greenish phyllosilicate minerals commonly found in low-grade metamorphic rocks. It has a flaky texture similar to mica
$1.00
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Gypsum
A soft sulfate mineral that is used in plaster and drywall. It can appear white, gray, or transparent and often forms in evaporite deposits.
$1.00
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Hypersthene
A dark-colored pyroxene mineral that occurs in igneous and metamorphic rocks. It has a glassy luster and often appears greenish-brown.
$10.00
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Hematite
An iron oxide mineral with a reddish-brown to black color. It is an important iron ore and can produce a red streak when scratched on a surface
$1.00
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Limonite
A yellowish-brown iron oxide-hydroxide mineral that forms as a weathering product of iron-bearing minerals. It is often amorphous and was historically an iron ore.
$1.00
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Epidote
A calcium aluminum iron silicate mineral that is typically green and found in metamorphic rocks. It forms elongated, prismatic crystals.
$15.00
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Dolomite
A calcium magnesium carbonate mineral that closely resembles calcite but reacts more slowly with acid. It is a key component of dolostone rock.
$1.00
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Diopside
A pyroxene mineral that is typically green but can also appear white or brown. It forms in metamorphic and igneous rocks.
$1.00
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Arsenopyrite
An iron arsenic sulfide mineral with a metallic silver-gray color. It is the primary ore of arsenic and has a strong garlic-like odor when struck.
$1.00
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Garnet
A group of silicate minerals that come in various colors, most commonly red. Garnets are used as gemstones and abrasives.
$500.00
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Azurite/Malachite
Copper carbonate minerals; azurite is deep blue, while malachite is green. They often form together in oxidized copper deposits.
$40.00
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Topaz
A silicate mineral that comes in a variety of colors, including yellow, blue, and pink. It has high hardness and is used as a gemstone.
$3,000.00
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Olivine
A magnesium iron silicate that is typically green and found in igneous rocks such as basalt and peridotite. The gem-quality variety is known as peridot.
$50.00
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Zeolite
A group of hydrated aluminosilicate minerals that form in volcanic and sedimentary rocks. They are used for water purification and in industrial processes.
$5.00
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Shungite
A carbon-rich mineral (up to 98% carbon) with a black, lustrous appearance. It is associated with water purification and is sometimes considered a pseudo mineral.
$6.38
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Biotite
A dark-colored mica mineral found in igneous and metamorphic rocks. It forms thin, flexible sheets.
$1.00
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Fluorite
A calcium fluoride mineral that occurs in many colors, including purple, green, and yellow. It fluoresces under UV light and is used in optics and industry.
$3.00
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Apatite
A group of phosphate minerals) that are an important source of phosphorus. It can be green, blue, yellow, or brown and resembles some gemstones.
$10.00
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Halite
Commonly known as rock salt, it is typically colorless or white and forms by the evaporation of saltwater. It is used for food and de-icing roads.
$7.50
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Barite
A barium sulfate mineral that is heavy and typically white or light-colored. It is used in drilling mud for oil and gas exploration.
$14.00
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Rhodonite
A manganese silicate mineral that is pink to red with black manganese oxide veins. It is used as a gemstone and ornamental stone.
$25.00
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Vesuvianite
A silicate mineral found in metamorphic rocks. It is often green, brown, or yellow and sometimes used as a gemstone.
$24.62
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Opal
A hydrated silica mineral that displays iridescence due to its internal structure. It is commonly used as a gemstone.
$10.00
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Kaolinite
A hydrated aluminum sulfate mineral that is white or colorless and forms in evaporite deposits.
$150.00
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Cassiterite
A tin oxide mineral that is the primary ore of tin. It is usually brown to black with a high luster.
$125.00
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Phlogopite
A magnesium-rich mica mineral that is brown to golden and forms in metamorphic rocks.
$8.00
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