Top 10 Varieties Of the Gemstone TopazTopaz can occur in many colors but it's most commonly golden brown to yellow.
Topaz hardness on Mohs scale is 8 /10 (one of the best).
The Top Ten
A very rare stone. Blue topaz is the state gem of Texas. - Metal_Treasure
Its color varies and can be even violet - Metal_Treasure
A very rare gem - Metal_Treasure
(also known as precious topaz).
It's the state gem of Utah, USA. - Metal_Treasure
It's colorless topaz sometimes used as a diamond alternative or to get artificially coated to make mystic topaz - Metal_Treasure
It's colorless topaz artificially coated via a vapor deposition process that gives it a rainbow effect. - Metal_Treasure
It's usually pale green - Metal_Treasure