Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C., eds. (1995). "Topaz"(PDF). Handbook of Mineralogy. Vol. II (Silica, Silicates). Chantilly, VA, US: Mineralogical Society of America. ISBN978-0-9622097-1-0. Retrieved December 5, 2011.
ayanajewellery.com
"Topaz Guide". Ayana Jewellery. Archived from the original on November 24, 2016. Retrieved November 23, 2016.