This page will contain images 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. He recently appeared on Oprah. 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. He is now 73 years old, still designing, and living in Rome. 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. Association with Giancarlo Giammetti, a program for the support of AIDS victims. 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 1990, he cofounded the L.I.F.E.

It can be found in the Ural and Ilmen mountains, Czech Republic, Saxony, Norway, Sweden, Japan, Brazil, Mexico, and the United States. He currently designs menswear and womenswear and has his own perfume and make-up line. Topaz is found associated with the more acid rocks of the granite and rhyolite type and may be found with fluorite and cassiterite. Through the 1970s Valentino spent considerable time in New York City where his presence was embraced by social personalities such as Steve Rubell and art identities such as Andy Warhol. 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. He designed the white dress that Jacqueline Kennedy wore to her wedding with Aristotle Onassis. It can also be irradiated, turning the stone a light and distinctive shade of blue. In 1967, he premiered the Valentino White Collection, which became famous for the "V" logo he designed.

When heated, yellow topaz often becomes reddish-pink. His first show, in 1962, was a success, and Valentino was welcomed into the fashion world. They may also be white, gray, green, blue, or reddish-yellow and transparent or translucent. He moved to Rome in the beginning of the 1960s and started his own fashion house, Valentino. Pure topaz is transparent but is usually tinted by impurities; typical topaz is wine or straw-yellow. Then he joined Jean Desses and Guy Laroche. Topaz has a hardness of 8, a specific gravity of 3.4-3.6, and a vitreous lustre. He first found apprentice jobs, with Jean Desses where he used to help Jacqueline de Ribes sketch her dress ideas.

The fracture is conchoidal to uneven. He studied at the Ecole des Beaux Arts and Chambre Syndicale de la Couture Parisienne. 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. He became interested in fashion while in high school, during which time he studied under Vogherese designer Ernestina Salvadeo (an aunt of noted artist Aldo Giorgini) and at age 17 he moved to Paris to pursue this interest. It crystallizes in the orthorhombic system and its crystals are mostly prismatic terminated by pyramidal and other faces, the basal pinacoid often being present. Valentino is a fashion house created by Valentino Garavani, a famous fashion designer born on May 11, 1932, in the town of Voghera, Italy. The mineral topaz is a silicate of aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2.

This article is about the mineral or gemstone, for other uses see: Topaz (disambiguation).. Mineral galleries. Mindat with location data. Webmineral.

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