How are crystals formed is a good place to start, and all inorganic crystals will be found as members of the mineral kingdom of nature. Organic crystaline structures such as proteins, also behave energeticly like crystals, and are within the organic kingdom. Born from the earth, they contain all elements, earth, fire, water and air. Their origin is the molten core of our planet, a place of great heat, a vast cauldron of all known earthly elements.
Crystals form in rock that is the earth.
They arrive there dissolved in super heated water and gases. The inner core of the planet is so hot that stone becomes liquid and moves as oceans far below us. Because the crust is forever floating and moving, cracks are continuously created and molten magma is eager to invade. Under tremendous pressures and heat, the earth's rich cocktail of chemical compounds, steam and a multitude of gases come rushing upward to fill in the gaps. Vapors fill a space then cool.