Onyx is a stone with chemical formula SiO2 which means that it belongs...

Fordite, also known as Detroit agate or Motor City agate, is old...

Hash fossils are not actually one fossil, they are many fossils in...

Fuchsite, also known as chrome mica, is a chromium (Cr) rich variety...

Gabbro is a phaneritic (coarse-grained), mafic intrusive igneous rock formed from the...

Gary Green Larsonite, also referred to as "petrified bog wood" is a...

Located about halfway between the towns of Bend and Burns in eastern...

Located about halfway between the towns of Bend and Burns in eastern...

A common distributed type of rock formed by high-grade regional metamorphic processes from pre-existing...

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

Goldstone is a type of glittering glass made in a low-oxygen reducing...

Granite is a common type of felsic intrusive igneous rock that is granular...

Diopside is a monoclinic pyroxene mineral with composition MgCaSi2O6. It forms complete solid...

A semi-precious gemstone formed from silicon dioxide. It is a form of...

Tree Agate is a form of Snow Quartz with green manganese (dendritic) inclusions....

Halysites (meaning chain coral) is an extinct genus of tabulate coral. Colonies range...

Because of its high iron content, the Hematite crystal stone meaning is...

Hematoid Quartz is the name given to Quartz crystals included with Hematite. Often...

Holley Blue Agate is a highly sought-after and distinctive variety of agate...

Howardite, also known as Rattlesnake stone is rare form of opal silicated...

Hypersthene is a common rock-forming inosilicate mineral belonging to the group of...

Jasper, an aggregate of microgranular quartz and/or chalcedony and other mineral phases,...

Inca Blanket Rhyolite is a new material that resembles a cross between...

Indian Paint Stone (aka Death Valley Paint, or Navajo Blanket Stone) comes...