Honey yellow. Fiery orange. Cyclamen pink. Icy blue. In warm or cool tones, topaz is a lustrous and brilliant gem.

ABOUT TOPAZ

Topaz occurs in a range of different colors deep golden yellow topaz(sometimes called sherry topaz)  and pink topaz are the most valuable; blue and green stones are also popular.  Natural pink stones are rare most pink topaz is heat-treated yellow material.  colorless heat treated to a range of blues,  some almost indistinguishable from aquamarine when seen with the naked eye.  Some topaz has tear-shaped cavities,  containing a gas bubble or several immiscible(non-  mixing)  liquids.  Other inclusions such as cracks,  streaks,  and veils also occur.  Prismatic topaz crystals have a characteristic lozenge-  shaped cross-section and striations parallel to their length.  Topaz has one perfect cleavage.

OCCURRENCE

opaz occurs in igneous rocks such as pegmatites, granites, and volcanic lavas. It may also be found in alluvial deposits as waterworn pebbles. Localities include Brazil, the USA, Sri Lanka, Burma, the former USSR Australia, Tasmania, Pakistan, Mexico, Japan, and Africa. Brazil, Pakistan, and Russia are sources of pink topaz

Fun Facts

The royal court in Portugal celebrates the discovery of Imperial topaz in 1768.
A transparent topaz crystal discovered in Minas Gerais, Brazil weighs an astounding 596 pounds.
Irradiating colorless topaz with electrons at energy of 10 million electron volts creates a sky blue color.
Birthstone December
Anniversary 4th wedding anniversary
Crystal Structure Orthorhombic
Composition Aluminum Fluorohydroxysilicate
Colour Yellow, orange, brown, pink to red to purple red, blue , light green and colorless
Luster Vitreous
Refractive Index 1.62 to 1.63
Specific Gravity 3.54
Mohs Hardness 8
DR 0.010