The color of the most valuable topazes ranges from a warm, intense orange-yellow to a reddish gold. A very rare, truly royal gemstone for the genteel connoisseur.
Formula: Al2SiO4(OH,F)2
Hardness: 8
Density: 3.52 – 3.57 g/cm3
Refractive Index: 1.606- 1.64 DR: 0.008 – 0.010
Color:
Golden yellow, orange, orange-red
Countries of Origin: Brazil
Birthstone: November