Topaz

Topaz has an exceptionally wide color range that, besides brown, includes various tones and saturation of blue, green, yellow, orange, red, pink, and purple. Colorless topaz is another option.
There are also a couple of special trade names: imperial topaz (reddish orange; the most expensive color) and sherry topaz (yellowish brown to orange; the term comes from the color of sherry wine).
There are many sources for topaz: Australia, Brazil, Madagascar, Mexico, Myanmar, Namibia, Nigeria, Pakistan, Sri Lanka, and the US.

Pink Topaz
Pink Topaz
Blue Topaz
Imperial Topaz