The Yellow Topaz or Citrine are the Birthstones for November. 

The topaz gemstone is a hard gemstone. The topaz comes in the colours of yellow, pink and blue.  The topaz hardness is 8.0.  Citrine crystals can form with amethyst and make ametrine and bi-coloured quartz.  Citrine comes in the colour of yellow.  Citrine hardness is 7.0.

Topaz is said to reduce mood swings and worries.  The wearer of topaz wears the gemstone to be clear-sighted.  Citrine is said to encourage the body to relax, and unwind. 

Topaz is also the 23rd anniversary gemstone.

Citrine is also the 13th anniversary gemstone.