F A C E T - N A T I O N

         

An island in the Red Sea, known in antiquity as Topazion, probably the modern island of Zeberget, gave Topaz it's name. The Romans associated topaz with Jupiter, who also was their god of the sun. The Egyptians said that topaz was colored with the golden glow of the mighty sun god Ra. This made topaz a very powerful amulet that protected the faithful against harm.

The old traditions hold that topaz bestowed many benefits upon its wearer. It would relieve bad dreams, dispel cowardice, calm the temper, cure madness and plague, and sharpen the wit. It was thought to aid in sleep and eliminate nightmares, as well as cure rheumatism and soreness in the joints. Topaz was also credited with being effective against bleeding and heart disease. The gem was said to instantly lose its color to indicate that poison was present, thus protecting its owner. Topaz was also thought to bring fidelity and friendship if constantly worn without being set aside. It was also believed to be an effective talisman against accident and fire, and to bring increased intuition and long life.

To Christians, topaz has been known as a symbol of uprightness and virtue. Hindus believe that worn as a pendant, this gemstone will relieve thirst, sharpen intelligence and lengthen one's life. It is thought to be the ideal stone for travelers, protecting them from accidents and homesickness. The ancient Romans credited topaz with preventing sickness of the chest and abdominal tract. If you wish to be clear-sighted wear topaz because legend has it that it helps to improve eyesight! The ancient Greeks believed that it had the power to increase strength and make its wearer invisible in times of emergency. Its mystical curative powers waxed and waned with the phases of the moon.

Topaz can be the amber gold of fine cognac or the blushing pink-orange of a peach and all the beautiful warm browns, golds, and oranges in between. Some rare and exceptional topaz is pale pink to a sherry red. All of these colors are known as precious topaz. Blue topaz, a popular affordable gem, has an enhanced color: topaz with a natural blue color is very rare.

Rare pastel pink topaz is found in Pakistan and Russia. When pink topaz was first discovered in Russia, ownership was restricted to the Czar and his family and those to who he gave it as a gift. This is why fine colored topaz is known as imperial topaz.

The term Imperial Topaz refers to stones with a fine peachy to reddish orange color. It should not be confused with Citrine or Smoky Quartz, both of which are sometimes erroneously called topaz. Today we also have Blue Topaz, which has a pale to dark blue permanent color created by irradiation. Topaz which is enhanced to become blue is found in Brazil, Sri Lanka, Nigeria, and China.

The golden glow of late afternoon, the reddish orange of sunset and the pink of dawn's first light, these are the colors of topaz, a gem with the warm tones of the sun. Like the sun, topaz is flattering to the skin, lighting up your face with a golden glow that enhances every color in your wardrobe.

True topaz is found in shades of colorless to yellow, orange, red or brown. Topaz sometimes has the amber gold of fine cognac or the blush of a peach and all the beautiful warm browns and oranges in between. The major sources for topaz are Brazil, Nigeria, Australia, Burma, Mexico and PSU! Brown, yellow, orange, sherry, and red. Pink topaz is found in Pakistan and Russia. In North America, Mexico has been an important topaz source and California, Colorado, Utah, Maine, and New Hampshire have also produced topaz. 

Legend says that topaz has the power to dispel enchantment. The ancient Greeks believed that topaz could increase strength and make a wearer invisible in times of emergency. Topaz was said to change color in the presence of poisoned food or drink. Wear topaz only if you wish to be clear-sighted: legend has it that it dispels all enchantment and helps to improve eyesight as well!  Topaz was also said to change color in the presence of poisoned food or drink. Its mystical curative powers waxed and waned with the phases of the moon: it was said to cure insomnia, asthma, and hemorrhages. Topaz is the birthstone for those born in the month of November.

Perhaps the most famous topaz is a giant specimen set in the Portuguese Crown, the Braganza, which was first thought to be a diamond. There is also a beautiful topaz in the Green Vault in Dresden, one of the world's important gem collections.

Topaz is a very hard gemstone but it can be split with a single blow, a trait it shares with diamond. As a result it should be protected from hard knocks. Precious topaz is most often found in a scissors cut, a rectangular gem cut with curved sides that has triangular facets. Ovals, cushions, and emerald cuts are also available.

Topaz is fairly hard but its use is somewhat restricted by the perfect basal cleavage along the basal pinacoidal (crystal face that intersects a single crystal axis) crystal face. The factor must be sure that no facets of a stone are parallel to this face or the faceting machine will simply tear away thin layers of topaz cleavages. Topaz has a specific gravity of about 3.50 to 3.57. Light shades (pink, yellow, etc.) usually occupy the lower range and darker shades (blues) usually occupy the higher range, as do colorless stones. Many of the blue topazes are derived from colorless stones that have been heat-treated so that is one reason why colorless stones have a higher specific gravity.

The refractive index (the numerical measure of how much the stone bends and slows a beam of light) of topaz ranges from about 1.610 to about 1.617 in colorless and blue to about 1.630 to about 1.637 in yellow and brown stones. The fairly low refractive index and the fairly high specific gravity are an unusual characteristic as refractive index usually varies upward with the specific gravity. The anomalous, low refractive index of topaz may be due to the presence of the very large fluoride ion in the crystal lattice. Topaz has been found in granitic pegmatite (coarsely crystalline hydrothermal deposits) and in cavities in rhyolitic welded ash flow tuffs. Topaz is almost always found in the form of large, well-developed crystals. Massive topaz is practically unknown. Most gem topaz is mined directly from the host rock or from nearby sediment derived from the host rock. Because of its poor toughness, topaz is rarely found in gravel deposits that have been removed any distance from the source area. Topaz is usually easily separated from its imitators by refractive index---few materials fall into this range, except tourmaline which is so strongly doubly refractive that one will observe doubled back facets when looking through the table of the stone with a small magnifier (about 6 to 10 power). Topaz rarely comes in the same shades as tourmaline either.

Rough Topaz crystal gallery. Click any picture for a larger image.  Notice the six-sided, elongated nature of the crystal.

 

Moh’s Hardness: 8 Toughness: Poor to fair Specific gravity: 3.52-3.56 System: Orthorhombic  Refractive index: 1.61-1.638 Chemical: Al2(SiO4)(OH4F)2

 

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