This page will contain discussion groups about Topaz, as they become available.

Topaz

This article is about the mineral or gemstone, for other uses see: Topaz (disambiguation).

Topaz 4 Carat Oval Shape Topaz Gemstone Ring Enhanced with Azotic(r)Treatment Heart Cut Sky Blue Topaz Ring

The mineral topaz is a silicate of aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2. It crystallizes in the orthorhombic system and its crystals are mostly prismatic terminated by pyramidal and other faces, the basal pinacoid often being present. It has an easy and perfect basal cleavage and so gemstones or other fine specimens should be handled with care to avoid developing cleavage flaws. The fracture is conchoidal to uneven. Topaz has a hardness of 8, a specific gravity of 3.4-3.6, and a vitreous lustre. Pure topaz is transparent but is usually tinted by impurities; typical topaz is wine or straw-yellow. They may also be white, gray, green, blue, or reddish-yellow and transparent or translucent. When heated, yellow topaz often becomes reddish-pink. It can also be irradiated, turning the stone a light and distinctive shade of blue. A recent trend in jewelry is the manufacture of topaz specimens that display iridescent colors, by applying a thin layer of titanium oxide via physical vapor deposition.

Topaz is found associated with the more acid rocks of the granite and rhyolite type and may be found with fluorite and cassiterite. It can be found in the Ural and Ilmen mountains, Czech Republic, Saxony, Norway, Sweden, Japan, Brazil, Mexico, and the United States.

Etymology and historical/mythical usage

The name "topaz" is derived from the Greek topazos, "to seek," which was the name of an island in the Red Sea that was difficult to find and from which a yellow stone (now believed to be a yellowish olivine) was mined in ancient times. In the Middle Ages the name topaz was used to refer to any yellow gemstone, but now the name is only properly applied to the silicate described above.

According to Rebbenu Bachya, the word "Leshem" in the verse Exodus 28:19 means "Topaz" and was the stone on the Ephod representing the tribe of Dan.

Topaz is also the birthstone of November.

Example of Heat Treated Topaz-Pink Topaz Pear Cut Ring

References

  • Webmineral
  • Mindat with location data
  • Mineral galleries

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Topaz is also the birthstone of November. They have two adopted children, Josephine, born in 1993, and Cecilia, born in 1990, who both currently attend The Chapin School. According to Rebbenu Bachya, the word "Leshem" in the verse Exodus 28:19 means "Topaz" and was the stone on the Ephod representing the tribe of Dan. Wang currently lives in New York City with her husband, Arthur Becker, the CEO of a company called Navisite. In the Middle Ages the name topaz was used to refer to any yellow gemstone, but now the name is only properly applied to the silicate described above. In June 2005, she won the CFDA (Council of the Fashion Designers of America) women's wear designer of the year. The name "topaz" is derived from the Greek topazos, "to seek," which was the name of an island in the Red Sea that was difficult to find and from which a yellow stone (now believed to be a yellowish olivine) was mined in ancient times. She also penned the book Vera Wang on Weddings which was released by Harper Collins in October, 2001.

It can be found in the Ural and Ilmen mountains, Czech Republic, Saxony, Norway, Sweden, Japan, Brazil, Mexico, and the United States. She has expanded her brand name though her own fragrance, jewelry, shoe and houseware collections. Topaz is found associated with the more acid rocks of the granite and rhyolite type and may be found with fluorite and cassiterite. She has designed costumes for figure skaters, including Nancy Kerrigan and Michelle Kwan, and has made wedding gowns for Mariah Carey, Jennifer Lopez, Jessica Simpson,Victoria Beckham and Sharon Stone, among others. A recent trend in jewelry is the manufacture of topaz specimens that display iridescent colors, by applying a thin layer of titanium oxide via physical vapor deposition. In 1990, she opened her own design salon in Carlyle Hotel in New York which featured her trademark bridal gowns. It can also be irradiated, turning the stone a light and distinctive shade of blue. She worked for Ralph Lauren as a design director for two years.

When heated, yellow topaz often becomes reddish-pink. Wang was a senior fashion editor for Vogue magazine. They may also be white, gray, green, blue, or reddish-yellow and transparent or translucent. When she failed to make the US Olympic team, she turned to her other passion, fashion. Pure topaz is transparent but is usually tinted by impurities; typical topaz is wine or straw-yellow. Figure Skating Championships. Topaz has a hardness of 8, a specific gravity of 3.4-3.6, and a vitreous lustre. As a girl, Wang trained as a figure skater, and competed at the 1968 U.S.

The fracture is conchoidal to uneven. Her maternal grandfather was a warlord in China. It has an easy and perfect basal cleavage and so gemstones or other fine specimens should be handled with care to avoid developing cleavage flaws. Her paternal grandfather was a military general in China. It crystallizes in the orthorhombic system and its crystals are mostly prismatic terminated by pyramidal and other faces, the basal pinacoid often being present. Her father started and owned a chemical company. The mineral topaz is a silicate of aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2. Her mother often took her to fashion shows in Paris.

This article is about the mineral or gemstone, for other uses see: Topaz (disambiguation).. She graduated from Sarah Lawrence College with a degree in art history. Mineral galleries. She is a Chinese American raised in an affluent family and attended the The Chapin School, which both her daughters currently attend, and the Sorbonne in Paris. Mindat with location data. She is known for her wedding gown collection among other specialties. Webmineral. Vera Wang (Chinese: 王薇薇; Hanyu Pinyin: Wáng Wēiwei; born June 27, 1949) is a fashion designer based in New York, NY, USA.

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