What term is used for yellow-to-orange stones of topaz?

The term "Imperial topaz" is used to describe yellow-to-orange stones of topaz, making it the correct choice in this context. Imperial topaz is specifically valued for its rich golden to orange hues and is often considered the most desirable variety of topaz.

Yellow-to-orange topaz exhibits a unique chromatic quality that distinguishes it from other varieties, and its name reflects its historic association with luxury and royalty. Understanding this classification helps distinguish the prized Imperial topaz from more general terms that do not carry the same connotations of quality and desirability.

"Precious topaz" and other descriptions like "common" do not accurately convey the specific beauty and market value associated with yellow-to-orange topaz, demonstrating how important precise terminology can be within the gemstone industry.