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Featured Gemological Article
The Hobby Of Gemstone Collecting
By Lee MacRae
Why would anyone collect items like loose gemstones, you ask? Well for one thing they are very beautiful items. And like their higher counterpart, natural diamonds they can become extremely valuable over the years. Many hobbyists love to collect and show case the wide variety of gemstones available today. Read long as we examine the loose gemstones hobby.
The first thing you need to do is to get yourself some reading material. You want to learn as much as possible about the subject of gemstones. The more you know about each kind of gemstone the less likely you are to make a mistake. You'll know exactly what to buy.
The first item to look at is the color of the stone. You want the stone to be as close in color as possible to the pure colors of the spectrum. This means orange, red, violet, green, yellow, and blue. The prices for very pale or very dark precious and semi precious stones are lower.
The cut of the stone is extremely important and is used not only to appraise diamonds but you're gemstones as well. A precision cut gemstone highlights the pure color of the stone, lessen any inclusions and show off its symmetry and proportions. One excellent method to determine the precision of the cut is to consider how evenly it reflects light over its entire surface. But if a gem is cut too shallow, much of the light will refract out of the gem rather than reflecting internally. Gem color appears washed out.
Our next consideration is the clarity of the gemstone. The aspect of clarity refers to the internal conclusions or flaws of the gemstone. Larger flaws can easily be seen with the naked eye with others requiring a 10X magnification.
Next up are weight and size. Other than the corals and pearls gemstones are valued by the unit called the carat. One carat equals a 0.2 grams. You should know 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 similar sized sapphire or ruby weighs out at 1.20 carats.
Taking up the collecting of loose gemstones can be very rewarding hobby. And there is such a variety in gemstones you can collect. You could try collecting Jasper, Quartz and its varieties or Iolite for instance. The choice and beauty and variety is almost endless. And if you like a hands on hobby you can go hunting for raw gemstones. Just in the United States in Utah You can find Topaz, Garnet, Petrified Wood, Jasper and Obsidian.
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The Black Prince's Ruby is actually a bead-shaped spinel weighing roughly 170
carats (34 g) that is the size of a chicken egg. It is currently set in the
cross patt�e above the 317.40 carat (63.48 g) Cullinan II in the front of the
Imperial State Crown. The Black Prince's Ruby is one of the oldest of the Crown
Jewels of the United Kingdom, with a known history dating back to the middle of
the 14th century and having been in the possession of the British kings since it
was given in 1367 to its namesake, Edward of Woodstock (the "Black Prince").
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Zircon is somewhat soft so avoid scratches and sharp blows. Avoid hot water and
household chemicals. Brown Zicon is usually heat treated to change them to
colorless or blue Zircon. Blue stones that revert to brown will regain the blue
if reheated. Blue Zircon reheated in the presence of oxygen will change to a
golden yellow.
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Microcrystalline opals are made up of a microcrystalline material which is a
crystallized substance or rock which contains small crystals that are visible
only through microscopic examination. These opals are broken into two categories
: Opal-CT is where a predominant mineral rich layer is present within the opal
layers. They are all genuine minerals that formed from evaporating water with
low amounts of soluble silica. They are not Opal-A because the A type of opals
thrived during dry spells with very little water input.
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