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Topaz is a silicate mineral made of aluminum and fluorine with the chemical formula Al 2 Si O 4 (F, OH) 2. It is used as a gemstone in jewelry and other adornments. Common topaz in its natural state is colorless, though trace element impurities can make it pale blue or golden brown to yellow-orange.
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Topaz is a precious stone, typically colorless, yellow & is Allochromatic, which means that its color is caused by defects in its crystal structure.
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What is Topaz? Topaz is a rare silicate mineral with a chemical composition of Al 2 SiO 4 (F,OH) 2. It is best known for being these four things: one of the most popular colored stones. number "8" in the Mohs Hardness Scale. a birthstone for the month of November. a gemstone of many colors.
4 days ago · Topaz Description. This selection of gems from Ouro Prêto, Brazil, and Russia's Ural Mountains, displays the golden orange to pinkish red color range of precious topaz. The gems range from 7.61 to 14.33 carats in size.
Topaz is an aluminum silicate fluoride hydroxide crystal, occurring in pegmatites and high temperature quartz veins, as well as in cavities in granite and rhyolites. It is highly transparent with a vitreous luster and a hardness of 8, and has no industrial uses except as a gemstone.
The Gemstone Topaz. Topaz makes an ideal gem. A good hardness and desirable colors, combined with a relative abundance and availability makes it one the most popular gemstones. The most valuable colors of Topaz are the golden orange-yellow type, called Imperial Topaz, and the dark pinkish-red and orange-red colors.
Topaz is a rare silicate mineral that occurs in a wide variety of colors. It is one of the most popular colored stones and measures 8 on the Mohs scale for hardness, meaning that it can be worn safely as jewelry in many everyday situations.
Today, topaz is one of the US birthstones for November. The other is citrine quartz. Most authorities agree that the name topaz comes from Topazios, the old Greek name for a small island in the Red Sea, now called Zabargad.
