Bookmark and Share

October Birthstone - Topaz


Topaz mineral is best known as the November birthstone. Pure topaz is colorless; however the most typical color of topaz is a golden yellow color.

Topaz


Topaz Chemical Formula Composition: Al2, Si04, OH,F2
(Al2 = 2 Aluminum atoms)
(Si04 = 4 Silicon Dioxide)
(OH2 = 2 Hydroxyl atoms)
(F20 = 2 Fluorine atoms)
Topaz Color: Yellow, Blue, Pink, transparent.
Topaz Double Refraction Velocity Range
Ordinary Ray Velocity Range: 1.62 to 1.64
Extraordinary Ray Velocity Range: 1.61 to 1.63
Topaz Density: 3.52 to 3.56 (g/cm3 = Grams per cubic centimeter)
Mohs Hardness Scale for Topaz: 8.0

Topaz Bracelets


Topaz Earrings


Topaz Pendants


Topaz Rings