Gemological Information Article
Collecting Prescious And Semi-Prescious Stones
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 their value increases over time. Many hobbyists love to collect and show case the wide variety of gemstones available today. Read long as we discuss the hobby of loose gemstone collecting.
Right at the start you need to read up on the wide variety of stones available. This will help you to know the properties of each stone so you buy the right items. Without the proper knowledge you can make costly mistakes.
To start with, an important aspect in gemstone evaluation is color. It is a fact that gemstones are the most intensely colored naturally occurring materials you can find. Gems have become so synonomous with color, they've even had their names combined with associated colors. You've no doubt heard about emerald green, ruby red, sapphire blue, jade green, turquoise or aquamarine. Gemstones become higher in value the closer they come to the natural spectral colors of yellow, blue, violet, green, orange and red. They are valued much less the farther they deviate from the pure natural color.
The cut of your gemstone is an important factor to consider when evaluating gemstones. The cut has to be done with precision to reflect the light properly. A poor cut will not reflect light consistently over its entire surface. Tone, color saturation, and color hue will never look consistent.
A third consideration is the clarity of the stone under consideration. This is talking about the purity of the gemstone or the lack of internal inclusions, spots, or particles inside the crystal. Needless to say, stones with no flaws will make a gemstone very valuable.
Another consideration is the duo of size and weight. Due to their nature gemstones can vary greatly in density and specific gravity. Weight and size are not equal for each and every stone. If you have a diamond that weighs 1.00 carats a ruby of equal size would weigh 1.20 carats. An equal sized Emerald would be 0.95 carats while an Alexandrite would be about 1.23 carats.
Although gems are frequently used in jewelry, they are perfectly good collectibles in their own right. In fact, there are many attractive and interesting gems that are too fragile or too large to be used in jewelry. Here's a suggestion -- don't think of a gem as a component of jewelry; consider it as a piece of art and value it for its beautiful colors and the finish you apply to it. And unlike many hobbies where you have to buy everthing you can find your raw materials through field trips In the US in Montana you'll find Agate, Sapphire, Beryl, Amethyst, Smoky Quartz, Obsidian, Tourmaline and Garnet. And if you travel to Canada you will find nephrite jade in Mount Ogden, British Columbia or amazonite (microcline) near Lac St-Jean, Quebec as well as hessonite garnet in Asbestos, Quebec. Think of collecting gemstones as a great hobby and pastime.
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The Cullinan diamond, the largest ever found rough diamond at 3,106 carats, has
had 9 large stones cut from it. The Cullinan I, the Great Star of Africa, is the
largest colourless diamond in the world, and is the diamond found in the sceptre
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Today, some of the finest emeralds can be found in South America. They can be
found in other parts of the world with the most important sites being in Africa,
Pakistan, Afghanistan and Madagascar. The Mines of Cleopatra were the earliest
emerald mines on earth. There was emerald mining as early as 2000 B.C. These
early mines were abandoned in 1750, briefly revived, and then finally left to
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Latest Gemstone Article
Starting 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 just like natural diamonds they can become extremely valuable over the years. Many hobbyists love to collect and work with each and every one of the 150 varieties available. Read long as we look at the hobby of collecting loose gemstones.
Right at the beginning, what you need is to get some books from the library or bookstore. You want to know as much as possible about precious and semiprecious gemstones. The more you understand about the hobby of gemstones the wiser will be your purchases. You will know exactly what you are looking at.
Number one to look at is the color of the gem. Highly prized gemstones exhibit colors similar to the purest spectral colors of red, orange, yellow, green, blue or violet. Muted gemstone colors or on the dark side can lower the value.
How the gemstone is cut is the next factor to look at before a purchase. The precision of the cut is the factor that determines the amount of light the gemstone stone will reflect. It will fully ultimately determine the stones brilliance and how much someone will pay for it.
The clarity in a stone is an important consideration. Gemstone clarity relates to a stones relative freedom from inclusions or blemishes. A flawless gemstone is obviously valued highly. To examine flaws not seen with the naked eye requires a gemstone loupe or gemstone microscope. Many hobbyists will get a jewelers diamond gemstone loupe 10X for viewing their coins, beads, stamps or in our case gemstones.
Next thing to look at is the duo of weight and size. Because gemstones can vary greatly in density and specific gravity. Weight and size are not equal for each and every stone. Take the example of a diamond that weighs 1.00 carats and an equal sized Sapphire would weigh more than 1.20 carats. An Emerald of equal size would be approximately 0.95 carats while an Alexandrite gemstone would be about 1.23 carats.
Collecting gemstones as a hobby can become an enjoyable pastime and rewarding in the long run. It doesn't have to be very expensive and yet you can build a very exquisite collection. Many people loved to spend weekends to go hunting gemstones. Take the example of the United States. In New Jersey you can find Smoky Quartz, Agate, Pearl and Prehnite. Or ou can take a longer vacation and find opal in Coober Pedy, Andamooka or Mintabie in South Australia, topaz in Beechworth, Victoria or check out raw material in the peridot fields in Chudleigh Park, Queensland, Australia.
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In Kashmir sapphires are formed in pegmatites which are veins made up of
pegmatite. In the pegmatite formations that are the feeding ground for Kashmir
sapphires there is an abundance of aluminum and boron. In the rock surrounding
the formation there is iron and titanium present.
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Fair Grade diamonds: A gem in this category will have very little brilliance or
scintillation. The stone in the picture has a very dark ring around the girdle
and a dark table area.
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Fri, 12 Dec 2008 21:10:00 GMT
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