ROCKS, CRYSTALS, & MINERALS

This rock is an intrusive igneous form called gabbro which makes up much of Earth’s oceanic crust. This rock, sometimes called “black granite” in the ornamental stone industry, helped prove the theory of plate tectonics in the 1960s. When researchers...

Not only is this rocky ball a concretion of sandstone and hematite, it is also evidence that water once existed on Mars. These concretions commonly form in the Southwest United States and were called Moqui Marbles by the Hopi people...

 This listing is for the exact specimens shown. Further information: Fluorite is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not...

 This listing is for the exact specimens shown. Further information: Fluorite is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not...

This black rock is a mineraloid consisting of ≥98% carbon that was first found near the village of Shunga, Russia. It was therefore called shungite. It may look like coal, but it has some remarkable differences. The Shunga deposit where...

This listing is for the exact specimen pictured. Weight: 1.01 lbs   FURTHER INFORMATION: Galena, also called lead glance, is the natural mineral form of lead(II) sulfide (PbS). It is the most important ore of lead and an important source...

This listing is for the exact specimen pictured. Weight: 1.78 lbs  FURTHER INFORMATION: Galena, also called lead glance, is the natural mineral form of lead(II) sulfide (PbS). It is the most important ore of lead and an important source of...

 This listing is for the exact specimen pictured.  Weight: 1.27 lbs  FURTHER INFORMATION: Lepidolite is a lilac-gray or rose-colored member of the mica group of minerals with formula K(Li,Al,Rb)2(Al,Si)4O10(F,OH)2. It is the most abundant lithium-bearing mineral and is a secondary source...

 This listing is for the exact specimen pictured.  Weight: .11 lbs  FURTHER INFORMATION: Lepidolite is a lilac-gray or rose-colored member of the mica group of minerals with formula K(Li,Al,Rb)2(Al,Si)4O10(F,OH)2. It is the most abundant lithium-bearing mineral and is a secondary source...

 This listing is for the exact specimen pictured.  Weight: .50 lbs    FURTHER INFORMATION: Lepidolite is a lilac-gray or rose-colored member of the mica group of minerals with formula K(Li,Al,Rb)2(Al,Si)4O10(F,OH)2. It is the most abundant lithium-bearing mineral and is a secondary...

Listing for one labradorite approximately 2" and up. About This white stone is a unique variety of labradorite sometimes called rainbow moonstone. Most labradorite is dark grey but this variety is technically called colorless since, in geology, color is usually...

This listing is for the exact specimen you will be receiving. FURTHER INFORMATION: Granite is a coarse-grained igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal...