If a colorless topaz is irradiated by ultraviolet light x rays gamma rays or high energy electrons we can obtain a yellow orange or brown color but this color is usually unstable and fades in a few days in light. This stone is said to be precious and lucky for the november girls. It is widely used for jewellery designing for ladies. You can also find pastel shades in pinks violets and milky green. It is named after sherry wine and ranges from yellowish brown and brownish yellow to orange in color.
Today the most common colours found of topaz in its natural state are a pale shade of yellow grey and brown. Colorless topaz is fairly common and is rarely given a dazzling cut and sold as a diamond replacement. One with golden shade pale yellow and deep orange. This helps traders to distinguish sherry topaz from similar but less expensive gemstones like citrine and smoky quartz. Topaz is available in a variety of colors from yellow orange gray purple blue black violet and green.
The most valuable colors of topaz are the golden orange yellow type called imperial topaz and the dark pinkish red and orange red colors. Naturally colored topaz such as yellow orange and brown topaz contain color centers that are stable to light. Citrine topaz gemstones are found in three colours. In the case of topaz the iron atoms create another unstable species in the crystal and this new species jumps to an excited state by absorbing a visible photon of light which emits light from different regions of the spectrum depending on their wave length when they return to the ground state giving rise to the variety of colors found in topaz including the golden yellow or golden brown. Topaz can be found in many colors including yellow orange brown red blue pink violet and green.
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Several dealers even refer to this gem as precious topaz. Indeed one of the world s most famous topaz gemstones is a colorless topaz originally thought to be a diamond. Several dealers even refer to this gem as precious topaz. The most valuable colors of topaz are the golden orange yellow type called imperial topaz and the dark pinkish red and orange red colors. Today the most common colours found of topaz in its natural state are a pale shade of yellow grey and brown.Indeed one of the world s most famous topaz gemstones is a colorless topaz originally thought to be a diamond. If a colorless topaz is irradiated by ultraviolet light x rays gamma rays or high energy electrons we can obtain a yellow orange or brown color but this color is usually unstable and fades in a few days in light.
