this web page contains the following sections what is an agate how do agates form agate characteristicshow to search for the elusive lake superior agatemetaphysical properties of agatesgitche gumee geology what is an agate agates are semi\-precious stones that are a variegated form of chalcedony pronounced kal\-sed \-nee which is silicon dioxide in the form of microscopic fibrous quartz crystals. agates naturally develop when an empty pocket inside a host rock fills in molecule\-by\-molecule layer\-by\-layer as these microcrystals self organize to form concentric bands or other patterns. the colors and arran ent of the microcrystals are influenced by changes in pressure temperature and mineral content that occur during the formation process. unlike other stones each agate is unique. even s

agate basics
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