Indeed blue topaz is the perennial top selling jewelry stone in the usa. Blue topaz is usually found in three shades. The most popular topaz color is blue. The common impurity found in topaz is iron but iron does not impart any color directly to topaz as chromium impurities do in rubies which impart the red color. London blue swiss blue and pale sky blue.
London blue is a dark blue topaz with a moderate to dark tone and saturation. Pastel shades of light green violet and pink are also found. Since these colors are rarely vivid they are often treated to produce more exciting and intense hues. When blue topaz was first introduced the treated kinds sold for about 20 to 40 per carat. This topaz has a deep blue color with hints of green.
The various shades in blue colours they are seen in are sky blue sierra blue electric blue light blue london blue etc. The most valuable topaz colour known as imperial topaz is an orange to pink colour. These are known as swiss blue and london blue topaz. This gem has a light blue color which is similar to an aquamarine. The exact color is not well known for imperial topaz so a wide range of golden orange peach and pink topaz are offered under this name.
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Therefore natural blue topaz and colorless topaz are often heat treated and irradiated to produce the vibrant blue topaz that is seen in the market. In rubies the chromium atoms are excited directly by absorbing visible photons of light. Hence they are also cheap. All of the colors are produced using a combination of heat treatment along with various kinds of irradiating processes. Topaz is a mineral that is abundant in the earths crust and it can be found in a multitude of colors including blue pink and even red.Two varieties of treated blue topaz have become dominant. The color is permanen. The blue topaz gemstones are not real gemstone. Blue topaz mystic topaz imperial topaz white topaz pink topaz. This is a bright blue colored variety of the treated topaz.
Sky blue swiss blue and london blue. Swiss blue is a bright blue topaz with a light tone and light to moderate saturation. Currently the popular varieties of the treated blue topaz are sky blue topaz. Topaz is usually colorless in the absence of impurities. But because of the oversupply of blue topaz stones wholesale prices dropped significantly per carat.
There are commonly three colors of blue topaz on the market today. The most common colors of untreated topaz are pale yellow brown and gray. There are commonly three colors of blue topaz on the market today. Sky blue swiss blue and london blue. Two varieties of treated blue topaz have become dominant.
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The most common colors of untreated topaz are pale yellow brown and gray. Therefore natural blue topaz and colorless topaz are often heat treated and irradiated to produce the vibrant blue topaz that is seen in the market. The various shades in blue colours they are seen in are sky blue sierra blue electric blue light blue london blue etc. London blue is a dark blue topaz with a moderate to dark tone and saturation. Indeed blue topaz is the perennial top selling jewelry stone in the usa.
