Topaz that has undergone this treatment and been turned dark blue is sometimes used as a simulant for aquamarine these are distinct gem species.
Blue topaz stone value.
As with other gemstones color has important implications on topaz s value.
London blue topaz gemstone oval cut 14x10 genuine natural loose stone.
Make offer 7 80ct.
London blue topaz gemstone oval cut 14x10 genuine natural loose stone.
It is beautiful and affordable in large sizes making it a perfect statement stone.
Blue topaz is available in many shades of blue such as light sky blue bright swiss blue and darker london blue.
However a custom cut stone can sell for as much as 150.
Blue topaz is ideal for jewelry with a hardness level of 8 on the mohs scale.
A commercial cut stone is often available for 40 to 50.
Red topaz is particularly rare and therefore one of the most expensive types of this gemstone.
About blue topaz blue topaz is one of the all time top selling gemstones.
Oval cut genuine swiss blue topaz loose stone gemstone.
Colorless topaz is not of particular interest to gemstone dealers and buyers and is therefore inexpensive even for bigger specimens.
As for blue topaz gemstones practically.
Cut blue topaz is quite a versatile gemstone which is found in a great variety of shapes including oval round square heart trillion pear rectangular cushion and many more.