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Starting To Collect Loose Gemstones
By Lee MacRae
Gemology is the science, art and profession of identifying and evaluating gemstones from natural diamonds to loose gemstones. Many people take up gemology more as a hobby. They become interested in collecting items like loose gemstone or natural diamonds. Some people even begin to visit different areas nearby or in some cases other countries to look for raw gemstones. Some even tumble or learn to cut their own gemstones. If you have an interest in this hobby then read along as we discuss the various factors in gemstone collecting.
Right at the beginning, what you need is to visit the library and get some books. You want to know as much as you possibly can about the subject of gemstones. The more you know about each kind of gemstone the less likely you are to make a mistake. With adequate knowledge you are less likely to be fooled.
Color is a very important part in the value of the stone. The closer a color is to its purer spectral value the more valuable the stone becomes. Traditionally, these specter colors are orange, green, yellow, Violet and blue. Gemstones colors that are darker or paler than a pure spectral color are considered a lower value.
How a stone is cut is the second most important factor to look at. How precise the cut is determines the amount of light is reflected by the gemstone. It will ultimately ultimately determine the stones brilliance and its final value.
Next to look at is gemstone clarity. Clarity refers to the the internal conclusions or flaws of a stone. Any large flaws you can usually see with your naked eye while others need a 10X magnification.
The next factors to consider our size and weight. All gemstones [except for pearls and corals] are priced by the unit, carat. A carat is equal to 0.2 grams. Be aware however, that weight and size are not always equal and gemstones. Density or specific gravity can vary in gemstones. If you have a diamond that weighs 1.00 carats, you will find a Sapphire or ruby of the same size would weigh 1.20 carats.
Taking up the collecting of loose gemstones can be very rewarding hobby. And there are so many different types in gemstones you can collect. You can start collecting gemstones like Chrysoprase, Amethyst (cardinal gem) or Clinohumite for example. The choice and beauty and variety is almost endless. And if money is tight you can go hunting for raw gemstones. Take the example of the US. In Michigan you can find Agate, Chlorastrolite and Hematite.
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Crystal Quartz is also found in Tanzania. It is found in Morogoro region, Tanga
Region,Kilimanjaro Region, Iringa,Singida Region, Mererani etc. On the surface,
the quartz found in abundance is milky quartz. You have to mine deeper to get
rid of Milky Quartz before you can reach the Clean Crystal Clear Quartz, making
it a highly costly laborious work. It does also depend upon the vein belt. If
the vein belt shows clarity within few metres of digging, you will reach high
grade quality Crystal quartz. The ground is mostly covered with kind of mud type
sand. If you happen to get a good vein, it can reach up to 300 kilometres
underneath the earth.
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There are many other common types of treatment to enhance the beauty of colored gemstones. Emeralds are often oiled and waxed to protect them and to hide fine lines that naturally occur in the stone. Some sapphires have their blue color enhanced using diffusion, a chemical process. Certain stones are treated with radiation, again mimicking the processes of nature. All these practices are standard in the jewelry industry; in fact, enhancement is so common that good quality unenhanced stones often come with a certificate stating that fact.
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The Reward of Faith Sapphire. This stone was was found in 1975 at the Reward
gemfield near Rubyvale in Queensland, Australia. In 1983 it was cut into the
52.36-carat round you see here, measuring 22.35 mm across and 13.49 mm deep. It
is still owned by its original owner. The stone's color in the photograph is
close to the true color but this does change considerably, to a deeper red,
depending on the nature of the light, although perhaps not strongly enough to be
called a color change sapphire.
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