Topaz occurs in a broad colour change. It is an emerald cut yellow topaz gem that was mined in brazil and before it was cut weighed 37 kg. Topaz comes in many colors including clear brown yellow orange red pink and blue. Topaz is also pleochroic meaning that the gem can show different colors in different crystal directions. Topaz actually has an exceptionally wide color range that besides brown includes various tones and saturations of blue green yellow orange red pink and purple.
Colorless topaz is plentiful and is often treated to give it a blue color. What colors and varieties of topaz exist. The colour in which the topaz is most commonly found is yellow and that is the colour in which it occurs in one of the major german gemstone rocks the schneckenstein a topaz bearing rock said to resemble a snail in saxony. Topaz has been known from antiquity. Topaz that has undergone this treatment and been turned dark blue is sometimes used as a simulant for aquamarine these are distinct gem species.
Some of the largest gemstone pieces ever cut were of topaz. However since topaz is typically less expensive than aquamarine consumers should be wary of unscrupulous vendors who may try to sell treated topaz as aquamarine. Topaz crystallizes in orthorhombic form and crystal is prismatic terminated by pyramidal and other faces. Blue topaz is the gem of the fourth wedding anniversary and imperial topaz is the gem of the 23rd wedding. Why buy topaz gemstones.
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However it does have perfect cleavage which can make it prone to. The el dorado topaz is the largest faceted gemstone in the world and weighs an incredible 31 000 carats. Red pink purple yellow orange brown blue green colorless. Topaz is a hard and durable gemstone and will not dissolve in most chemical solvents. Imperial topaz is the most valuable.Properties topaz is a silicate stuff of aluminum and fluorine. It is the largest cut yellow topaz in the world and one of the largest faceted gems of any type in the world. It is one of the hardest naturally occurring minerals mohs hardness of 8 and is the hardest of any silicate mineral this hardness combined with its usual transparency. Topaz is a silicate mineral of aluminium and fluorine with the chemical formula al 2 si o 4 f oh 2 topaz crystallizes in the orthorhombic system and its crystals are mostly prismatic terminated by pyramidal and other faces. Topaz of any type is an excellent jewelry stone due to its hardness 8 on the mohs scale and high refractive index.
The pure form of topaz is drab and translucent but is usually highlighted by impurities. Topaz is also available in numerous cuts and sizes all at affordable prices. Topaz is named from greek topazion for a type of gemstone probably after sanskrit tapas fire alluding to the brilliance of gem quality material. It can be found in huge and flawless crystals which can be faceted into giant gemstones which can weigh thousands of carats. The pure form of topaz is drab and translucent but is usually highlighted by impurities.
It can be found in huge and flawless crystals which can be faceted into giant gemstones which can weigh thousands of carats. Properties topaz is a silicate stuff of aluminum and fluorine. However it does have perfect cleavage which can make it prone to. Some of the largest gemstone pieces ever cut were of topaz. Colorless topaz is plentiful and is often treated to give it a blue color.
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Topaz is named from greek topazion for a type of gemstone probably after sanskrit tapas fire alluding to the brilliance of gem quality material. Topaz occurs in a broad colour change.
