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Agate is a relatively common stone that comes in hundreds of different varieties and colours, and may be found around the world. Agates are believed to have been formed millions of years ago during volcanic eruptions and the volcanic lava flows left cavities filled with gas. As the flows cooled, these cavities allowed for mineral bearing solutions to enter, and the combinations of these solutions along with heat, pressure and millions of years, allowed the agate to form.
Enhanced agate specimens boast a metallic finish, caused when the stone is plated with a metal. To start, the agate is selected, then treated via an electrostatic process whereby the stones are put into a vacuum and charged. Heat is applied. The plating metal of choice is then put into the vacuum and it "clings" to the stone, giving it an entirely unique quality of iridescence or colour.