Topaz Brazil Ref434

Topaz (Old collection) from Minais gerais Brazil.

Dimensions: 40mm x 28mm x H: 34mm.

Weight with base: 96g.

Topaz belongs to the class of silicates with the chemical formula Al₂SiO₄(F,OH)₂.

It is found in a wide range of natural hues, including yellow, blue, pink, colorless and brown.

Its hardness is 8 on the Mohs scale, making it one of the most resistant stones.

Density: 3.49 to 3.57 g/cm³.

Different varieties of topaz are available:

- Imperial topaz with a golden-yellow hue and red highlights.

- Very pale blue topaz, not to be confused with aquamarine.

- colorless topaz and pink topaz, often due to natural irradiation.