White topaz is the original color and composition of Mystic Topaz. Man Chemically alters the elemenets in a lab to create the vibrant colors of the rainbow. Some are electrically charged, metallic coating or chemically treated.
Topaz is a rare silicate mineral that usually forms in fractures and cavities of igneous rocks such as pegmatite and rhyolite, late in their cooling history. It is also found as water-worn pebbles in stream sediments derived from those igneous rocks.
Topaz is a well recognized gemstone and is available in a variety of colors. The more expensive Topaz is natural, as it is rare.
* Scientific proof may not be available to substantiate these claims.