Description: Amethyst Galleries' Mineral Gallery describes more than 600 minerals, with thousands of images and specimens. The descriptions include searchable mineralogical data, plus other information of interest to students and rock hounds!
minerals (1099) gemstones (778) elements (454) mineral specimens (41) birthstones (29) oxides (11) sulfates (7) biblestones (2) sulfides (2) halides (2)
What is a mineral? A mineral is (generally) an inorganic, naturally occurring, organized crystalline structure composed of a single chemical compound or element.
What is a rock? A rock is (generally) a natural solid composed of multiple crystals of one or more minerals. Although many rocks contain visible crystals of individual minerals, a rock itself does not have an overall crystalline structure.
What is a crystal? A crystal is an orderly arrangement of molecules formed because the component atoms and ions tend to aggregate together in certain specific patterns. Sometimes very different minerals are formed from the same starting materials (such as diamond versus graphite , both pure carbon) as determined by the temperature, pressure, or other conditions of formation. These arrangements result in the crystal forms described in the physical characteristics pages. Often, minerals are formed as a soluti
Ramblings on the Future of Humanity
ClassicGems.net
ClassicGems.net
worldgemsimporters
Jerry Hill Presents Names
Healing Power of Selenite
GeoLeiria
Mountain of Gold