Enhancement of amethyst may take a variety of forms. Some enhanced amethyst specimens boast a metallic finish, caused when the stone is plated with a metal. To start, the amethyst 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. This druze cluster is plated with Titanium.