A Geoscience Digital Image Library

DescriptionTopaz, Al2SiO4(F,OH)3 (aluminum silicate fluoride hydroxide), is a common gemstone that has been used for centuries in jewelry. Its golden brown to yellow color is classic but is confused with the less valuable citrine, which is sold under the name topaz. The blue topaz that is often confused with aquamarine is rarely natural and is produced by irradiating and then heating clear crystals.
LocationBrazil. Near Minas Gerais.
PhotographerDarla Sondrol. 2002-03-24.
CollectionWard’s Classroom Collection of Gem Minerals #7.
Key wordstopaz, Brazil
Tech details268 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number2530