BLUE TO GREEN TOPAZ - the most available form of topaz. Blue topaz is often produced by irradiating and then heating light brown and near colorless topaz stones. Topaz in medium to dark green colors are not natural. Most natural blue topaz will come from the Minas Gerais region in Brazil. Blue topaz which resembles aquamarine, is distinguished by a more brilliant luster and a higher specific gravity. It is always found in pegmatites or their secondary deposits.

PINK OR RED TOPAZ - red or strong pink topaz are considered the most valuable types of topaz. Most pink topaz is heat treated brownish-yellow from Brazil.

GOLDEN YELLOW TO ORANGE TOPAZ - with intense color and reddish to pink overtones is called Imperial Topaz. This is considered the most valued topaz stone. The sherry-red colored, imperial topaz, is mined in Brazil. The Soviet Union once had a field with Imperial Topaz, however this has been exhausted. The sherry-red variety may have a slight blue hue. The pink topaz type, that has chrome traces, is extremely difficult to find and is generally reserved for collectors. Often citrine or other stones are sold as yellow quartz. In Brazil, there are pale yellow topazes that are found which when cut resemble yellow sapphires.

COLORLESS TOPAZ - most topaz is light brown when mined and then turns colorless after exposure to light or low heat. Colorless topaz is often used to simulate diamonds.
Mystic topaz is colorless topaz which has been artificially coated giving it the desired rainbow effect