Eyeclean Princess
Tourmaline is unique because it occurs in a wide range of colors than any other gemstone. Although the general public does not know tourmaline, and some other gems, is increasing in popularity. Many standard commercial jewelry tourmaline gems have a few less. The fashion industry with its increasing use of bright colors in clothing, has created an unprecedented demand for natural stones in bright colors, which has increased the demand for this gemstone. Tourmaline name comes from the word Sinhalese "turmali" which means "mixed". Bright rainbow collections of gemstone varieties were called "turmali" plots. Originally, native miners applied this term to the parcels in common gems, when in fact they knew exactly what the stones were.
Tourmaline occurs in virtually all colors of gemstones known, with over 120 shades informed. Green, blue-green, blue and pink are typical, and these are the largest commercial demand. The reds are also in great demand, but are rare and difficult to acquire. The palette also includes lesser-known tourmaline violet tones of yellow, orange, brown, and other subtle colors one would expect to find in a rainbow instead of a jewelry store. Many color tourmaline zones, a precious stone cut so you can display different shades, sometimes with color bands clearly delineated. Tourmaline crystals grow in the hexagonal shape and tend to be long, pencil-shaped crystals. This crystal form is the reason why long rectangular cuts are so frequently seen in Tourmaline.
Green tourmaline of best blue-green tones really seem to the emeralds, and in the past been widely used as a kind of stimulant emerald. In the sixteenth century green tourmalines in Brazil were I actually thought the emerald. But the colors are tourmaline, remain intense on its own merits. Sometimes, tourmalines, especially green stones, can in actually be too dark in its saturation, allowing less brightness of the stone. The stones are easily available in sizes up to 5 carats. Great, flawless tourmaline are increasingly rare, however. Investment grade stones are usually thin and flawless color in sizes over 10 carats. Much larger stones are also available, but an impeccable green tourmaline age of 40-50 carats can be considered worthy of museum display. Like most tourmalines even these beings exceptionally large, sold at prices measured in terms of hundreds of dollars per carat, which should be considered a great potential for appreciation the future.
Ruby and spinel are priced at levels of thousands of dollars per carat. Tourmaline similar red color therefore, to several hundred dollars per carat, remains an attractive value and has significant potential for price increase. Red tourmalines, especially those that resemble ruby, are so rare that almost never seen in the jewelry stores, and are unknown to the public. Rubellite typical colors include pink, rose, red and purple hues, and intermediates. Chemical impurities that tourmaline red or pink are detrimental to the stable growth of the area in its natural environment. These impurities cause a tourmaline crystal growing to become internal defects or cracked; more impurity is present, the darker the color red, and the more imperfect the final glass. Therefore it is extremely rare to find dark violet, pink or red tourmalines as "clean" internally. Someday in the future Rubellite gemstone market are fully aware of this fact, and the fine will be priced accordingly.
Many tourmalines exhibit a property called pleochroism, the variation of colors visible in different directions axial crystal. Sometimes the colors are different in the end of the crystal and sometimes there is a color in the center of the crystal and another on the outside. A combination of colors, center pink with a green skin, is called "watermelon tourmaline". Sometimes designers are slices of glass instead of stones carved to show this phenomenon. The cutter must always cut the table parallel to the main axis to produce a stone with vivid color.
The purity and intensity of color and clarity are the qualities most important for assessing the tourmaline. The most valuable is the Paraiba tourmaline for now. The exceptionally bright colors command prices approaching $ 10,000 Pariba per carat. Rubellite Red Tourmaline is called because the deepest shades appear to be similar to Ruby. Eye clean Rubellite is one of the most expensive tourmalines, because generally it is a stone included – clean Rubellite is very rare. Rubellite the intense color makes a beautiful jewel for mounting. Rubellite The colors vary from red to brown fuchsia with red. The price of Rubellite increases dramatically as size increases or worsens the network in intensity, but nothing close to the price of materials Paribas. Fine tourmaline Blue (Indicolite), blue / green bi-color, parti color can also command good prices. Pink and green tourmaline are now widely available and are especially popular in jewelry design. Blue tourmalines are also very much in demand but supply is more limited.
Natural tourmaline crystals are sometimes very beautiful, pencil thin and ridged, and are sometimes set in jewelry in its natural form. Any of the Tourmaline colors can be used as one of the cornerstones of birth October. Tourmaline is also the 8th wedding anniversary gemstone. Tourmaline is one of the accepted birthstone for October and the accepted anniversary gemstone for the eighth year marriage. Some designers also set a rainbow tourmaline in each color of the spectrum. A "rainbow" bracelet with 30 or more tourmalines, each of a different color, is an ideal gift for special occasions! Tourmaline jewelry should be cleaned in warm soapy water with a soft brush. Do not clean the machine tourmaline Ultrasound home, especially Rubelita. It is also sensitive enough to be protected from scratches and knocks Sharp.
For photos and more information on the varieties of tourmaline described here, see the authorÂ’s website at: http://nevada-outback-gems.com/Encyclopedia_pages/Tourmaline.htm
The author has an entire set of web pages which are devoted to providing information about the world of gemstones. His gemstone information Encyclopedia page can be seen at: http://nevada-outback-gems.com/Encyclopedia_pages/Gemstone_Encyclopedia.htm
Chris Ralph writes on small scale mining and prospecting for the ICMJ Mining Journal. He is a rock hound and prospector and owns his own turquoise mines in Nevada. His website on gemstones and jewelry can be viewed at: http://nevada-outback-gems.com