Cladopora is a type of fossilized coral that can be found in...

Cobaltite is derived from the German, Kobold, which means "underground spirit".  It is...

Good for grounding and stabilizing one's emotions. Particularly useful in calming survival-based...

Within the state of Michigan, copper is found almost exclusively in the western...

Agate is a rock consisting primarily of cryptocrystalline silica, chiefly chalcedony, alternating...

Crinoids are marine animals that make up the class Crinoidea of the echinoderms (phylum Echinodermata). The...

Dalmatian Stone is a form of Granite containing potassium feldspar, plagioclase feldspar, quartz,...

Datolite Skarn is a Calcium Boron Silicate Hydroxide that occurs in fine...

Deer Creek Fire Agate is a high quality fire agate gemstone.  The fire...

Dendritic Opalite is a captivating material that combines the milky, translucent appearance...

The unique pattern and different colors in dinosaur bone are caused by...

Dumortierite is a fibrous variably colored aluminium boro-silicate mineral, Al7BO3(SiO4)3O3. Dumortierite crystallizes...

Emerald is a precious gemstone and a variety of the mineral beryl...

Epidote is a fascinating silicate mineral that is relatively common but often...

Epidote is an abundant rock-forming mineral, but one of secondary origin. It occurs...

Eudialyte, whose name derives from the Greek phrase Εὖ διάλυτος eu dialytos,...

Favosites or Charlevoix Stone is an extinct genus of tabulate coral characterized by polygonal...

Feldspar is the name given to a group of minerals distinguished by...

Feldspar is the name given to a group of minerals distinguished by...

Feldspar Granite is a felsic igneous rock and a type of granite...

Feldspars crystallize from magma as veins in both intrusive and extrusive igneous rocks...

This a synthetic (man-made) stone is composed of a substance known as...

Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2....

Flower of Peach or Flor de Durazno Lace Agate is a rock...