Blue Topaz Stud Earrings

1. 925 Sterling Silver, Gold Plated
2. Cushion Cut Blue Topaz
3. Stud Earring with Butterfly Clutch Backs 

BIRTHSTONES & ANNIVERSARIES

• Blue Topaz is the birthstone of December and is the gem of the 4th anniversary.

  • MINERAL: Topaz
  • CHEMISTRY: Al₂(F,OH)₂SiO₄
  • COLOR: Blue
  • REFRACTIVE INDEX: 1.619 to 1.627
  • BIREFRINGENCE: 0.008 to 0.010 
  • SPECIFIC GRAVITY: 3.53
  • MOHS HARDNESS: 8