What is Topaz?


Topaz is a silicate mineral of aluminum and fluorine. It’s primarily found in Russia, Afghanistan, and Brazil. Topaz comes in a variety of colors, but natural pure Topaz is colorless. It’s often used as a gemstone due to its wide range of color varieties.

Topaz is a colorful gemstone that comes in a variety of hues including blue, yellow, and pink. Its vibrant colors and lustrous appearance make it a popular choice for jewelry, especially rings and necklaces.

Gemstone Properties

Chemical ClassificationInorganic - Silicate (Nesosilicate)
ColorWhile topaz can be found in a variety of colors, blue and colorless are the most common. Other colors include yellow, orange, pink, and brown.
OccurrenceBrazil, Nigeria, and Russia.
FormationFormed in pegmatites and high-temperature quartz veins, often in association with tin and fluorine-bearing minerals.
CleavagePerfect in one direction
Mohs Hardness8
Specific Gravity3.49-3.57.
Diagnostic PropertiesHardness, often yellow to blue.
Chemical CompositionAl2SiO4(F,OH)2
Crystal SystemOrthorhombic
Optical PropertiesBiaxial (+)
Refractive Index1.609 - 1.643
Birefringence0.008 - 0.010
2V angleMeasured: 50° to 65°