So You Want To Collect Loose Gemstones
By Lee MacRae
The term gemology refers to the profession, science, and even art of evaluating and identifying gemstones from loose gemstones to natural diamonds. Many people take up gemology more as a hobby. They become interested in making a collection of items like loose gemstone or natural diamonds. You'll even find some that like to travel to different areas close by or even taking a trip to other countries to look for rough gemstones. Some hobbyists will learn to cut or tumble the gemstones they find. If you have an interest in this hobby read along as we reveal the various factors in gemstone collecting.
The first step in starting the hobby of collecting gemstones the intelligent way is by acquiring knowledge about them. By taking a quick trip to the library or local bookstore you can find everything you need to know that will let you make wise purchases from the beginning.
Color is a subjective idea but a very important part in the value of the stone. The closer the color comes to its pure spectral color the more highly prized it is. Traditionally, these specter colors are yellow, blue, Violet, green, orange and red. Colors that tend to be paler or darker diminish the value of the stone.
The way a stone is cut is the second most important value determination to look at before a purchase is made. The precision of cut will determine how much light the gemstone stone will reflect. The cut will factor highly in the brilliance of the stone and its final value.
A third consideration is the clarity of the stone under consideration. This is talking about the purity of the stone or the absence of internal inclusions, spots, or particles within the crystal structure. Obviously, stones with a lack of flaws would make the gemstone highly valuable.
Gemstones are often categorized according to their size aspect because of being more uniform than carat weight. But two different gemstones may have the same size but differ in carat weights and as a result different in prices as well. This is due to the nature of gemstone difference regarding specific gravity depending upon the chemical composition and crystal structure type Normally a one carat brilliant round diamond of typical proportions will be approximately 6.5 mm in diameter. A ruby that is the same size will weigh in at 1.55 carats instead.
Collecting various gemstones can create an enjoyable hobby and pastime. And there is a wide range and variety in precious and semi precious stones that you can collect. You can start collecting gemstones like Olivine (Peridot), Quartz and its varieties or Kornerupine for instance. The opportunities are seemingly endless. And if you like a hands on hobby you can go gemstone hunting and find the raw materials instead of buying them. Take the example of the US. In Missouri you can hunt for Pearl, Fluorite, Pyrite and Calcite.
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Brilliance is the amount of light reflected from the crown facets of a facet-cut gemstone. It is a combination of the light reflected back out of the stone and the light reflected directly from the facet surfaces. Two factors critical in achieving maximum brilliance are the angle of the pavilion facets and the degree of polish on the facet surface (lustre). The table facet of a diamonds is cut to various sizes depending on the desire for more brilliance and less fire(dispersion), where a larger table is used. Or more fire and less brillinace, where a smaller table is used. A good balance is obtained by cutting to ideal proportions. The pavilion facet angles are not only critical in determining the amount of brilliance, shallow angles may result in creating a 'window' in the stone; an area of the stone that can be seen through. Deep angles result in dark areas in the stone, termed extinction. Brilliance is lost in both situations.
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Amazonite is a gem variety of microcline feldspar. It displays a schiller of
light which is caused by . Amazonite varies from bright verdigris green to a
bluish green and is mined in the United States, Brazil, Zimbabwe, Russia,
Australia and Namibia.
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Colorless when pure, the zirconium silicate takes on various shades due to
impurities. The most popular zircon-color is blue. Most blue gemstones come in a
pastel blue, but some exceptional gems have a bright blue color. Zircon is also
available in green, dark red, violet, yellow, brown, and orange. The brown
varieties, mostly found in South Asian nations, are heat treated in order to
produce colorless and blue zircons. In the gemstone trade some terms refer to
different colored zircons:
Hyacinth: yellow, yellow-red to red-brown zircon
Jargon: straw-yellow to almost colorless zircon
Starlight: rich, slightly greenish blue zircon variety, created by heating
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