What is the color of imperial topaz?

Imperial topaz is recognized for its distinct color range, which typically falls between reddish orange and orange-red. This particular hue is one of the key characteristics that sets imperial topaz apart from other varieties of topaz, making it highly sought after in the gemstone market. The rich, warm tones of reddish orange to orange-red are attributed to trace amounts of chromium within the stone's structure. This coloration is not only prized for its beauty but also for its historical significance, as imperial topaz has been associated with nobility and luxury throughout its history.

The other color options presented do not align with the established characteristics of imperial topaz. For instance, light yellow to yellow pertains to a different variety of topaz, and deep red to brown describes colors typically found in other gemstones rather than in imperial topaz. Pink to peach is also associated with different types of topaz that lack the distinctive reddish orange to orange-red color, thereby highlighting the unique appeal and definition of imperial topaz specifically.