Fibrous actinolite is one of the six recognized types of asbestos, the fibers being so small that they can enter the lungs and damage the alveoli.

Fibrous actinolite is one of the six recognized types of asbestos, the fibers being so small that they can enter the lungs and damage the alveoli.

A dark green to greenish black stone sometimes used as a gemstone.

Purple, spherical chalcedony resembling bunches of grapes.

A type of translucent, microcrystalline quartz primarily mined in Brazil, known for its vibrant colors and beautiful banding patterns.

A vibrant, multicolored variety of chalcedony known for its intricate swirling patterns and complex color combinations, primarily found in Mexico.

The most valuable variety of quartz, and the birth stone of February.

Amazonite, also known as amazonstone,[4] is a green tectosilicate mineral, a variety of the potassium feldspar called microcline.

Anatase is a mineral form of titanium dioxide that's found in nature as hard, brilliant crystals. It's one of three naturally occurring crystalline phases of titanium dioxide, along with rutile and brookite. 

Rare earth bearing mineral.

A magnesium mineral used in the manufacturing of asbestos.

Apophyllite's unique tetragonal crystal structure and optical properties are of interest to mineralogists and geology students.

A pale blue to light green variety of Beryl, often used as a gemstone.

A commonly occurring calcium carbonate formed by biological and physical processes, including precipitation from marine environments.

An iron arsenic sulfide mineral that looks like a silvery fools gold.

A copper oxychloride, Atacamite often occurs in association with chrysocolla, is used in agriculture as a plant protection agent (fungicide).

A carbonate mineral, usually found as a secondary mineral in copper and zinc deposits.

A Uranium bearing mineral that glows under UV, very fragile and radioactive.

A copper bearing mineral, which is a weathered version of Malachite.

Baryte is used as a weighting agent for drilling fluids in oil and gas exploration to suppress high formation pressures and prevent blowouts.

Baryte is used as a weighting agent for drilling fluids in oil and gas exploration to suppress high formation pressures and prevent blowouts.

Bastnäsite's significance in modern technology has made it a strategic mineral, with global demand increasing as industries strive to adopt renewable energy and advanced electronic devices.

Birdseye Marble is the name used by the building–stone / decorative-stone industry for a particular limestone found in Utah that has distinctive fossilized algae ball structures (“birdseyes”) visible in the rock.

Rhyolite is a silica-rich volcanic igneous rock. It is essentially the volcanic equivalent of granite. Because it cools quickly (lava or volcanic flows), rhyolite often crystals too small to see with the unaided eye or even a glassy texture in some cases.

A uranium bearing ore, formed from the oxidation of other uranium ores. It is radioactive.

A uranium bearing ore, with a layer of calcite covering the crystals. It is radioactive.

A copper bearing mineral that tarnishes to iridescent shades of blue, purple, red, green and yellow.

A highly radioactive uranium ore.

Brochantite is a common corrosion product on bronze sculptures located in urban areas, where atmospheric sulfur dioxide (a common pollutant) is present.

Brockman Jasper is a jasper (i.e. an opaque, microcrystalline or cryptocrystalline variety of quartz / chalcedony) associated with the Brockman Tiger Eye mine in Western Australia. Brockman Jasper is prized for its rich, varied coloration. Typical colors include yellows, reds, olive greens, sometimes blues and blacks.

Brucite is known to have a higher magnesium content than any other industrially-used magnesium-bearing mineral (up to 65%MgO), and this makes it a highly effective agent for wastewater treatment and flue-gas desulphurization.

Bruneau Jasper is a variety of jasper, and more specifically a type of picture jasper. It shows layered / orb (egg-shaped) patterns of earthy tones — commonly browns, reddish browns, creams, and sometimes hints of red, green, or orange. The term “Bruneau” comes from the Bruneau River canyon in southwestern Idaho, U.S., where this jasper occurs.

Despite its name, Bumblebee Jasper is not a true jasper Instead, it is a silicified volcanic material composed mainly of Sulfur Arsenic Manganese oxides and pyrite. The banded yellow-orange-black patterns resemble the coloration of a bumblebee — hence the trade name. It’s only known source is an active volcano.

A common calcium carbonate mineral, containing manganese and carbon making it blue.

Calcite Onyx is just calcite with varying bands of different impurities. Onyx, and Calcite are different minerals, Calcite Onyx is a variety of Calcite.

Calcite with interesting and unique optical properties.

A common calcium carbonate mineral, containing iron oxide making it orange.

The most stable form of calcium carbonate, this one is a very rare double terminated crystal.

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A Tin Oxide mineral, that is an ore for Tin metal.

Cavansite is a distinctive blue mineral that forms crystal aggregates, generally in the form of balls.

The mineral is named for its occasional delicate blue color. Celestine and the carbonate mineral strontianite are the principal sources of the element strontium, commonly used in fireworks and in various metal alloys

A rare, semi-precious gemstone with a sky-blue to pale blue color.

Cerussite is a lead carbonate mineral that's an important source of lead metal.

A water soluble copper mineral. This mineral is toxic.

Chalcophanite is a secondary manganese mineral formed through supergene (near surface) alteration of zinc- and manganese-bearing base-metal deposits.

A copper sulfate often confused with pyrite and gold since all three of these minerals have a yellowish color and a metallic luster.

A copper sulfate often confused with pyrite and gold since all three of these minerals have a yellowish color and a metallic luster.

A green gemstone mined in the extremes of Siberia.

Chrysocolla has a cyan (blue-green) color and is a minor ore of copper.