Blue topaz is a traditional fourth wedding anniversary gift, while Imperial topaz is for the twenty-third wedding anniversary, the Geological Institute of America reports.

The Smithsonian has acquired an extraordinary 48.86-carat red topaz for the National Gem Collection. The Whitney Flame Topaz is one of the finest imperial, or “precious,” topaz gemstones in the world, ...

For the 2020 Oscars, Florence Pugh wore a diamond Louis Vuitton necklace with a 21 carat Imperial Topaz, a gem with ties to Russian royalty.