Collecting Prescious And Semi-Prescious Gemstones
By Lee MacRae
Gemology is the art, profession and science of evaluating and identifying rocks known as natural diamonds or loose gemstones. A number of people taken up gemology as a passionate hobby. They become very interested in starting to collect loose gemstones or loose diamonds. You'll even find some that like to travel to various neghbourhood locations to look for raw gemstones. Some even tumble or learn to cut their own gemstones. If you have an interest in this hobby read along as we reveal the various factors in gemstone collecting.
To begin with your first priority is to get yourself some books on gemstones. You want to learn as much as possible about the subject of gemstones. The more you learn about the hobby of gemstones the better off you'll be. You need to be as informed as possible.
Color is a very important part in evaluating a gemstone. The closer the color comes to its purer spectral value the more valuable it is. Traditionally, these specter colors include red, orange, yellow, green, blue, and violet. Colors that tend to be darker or paler are considered a lower value.
How a stone is cut is the next factor to look at. How precise the cut is is the factor which determines how much light the stone will reflect. The cut will determine the brilliance of the stone and how much it will be valued.
Another factor to look at is the stone's clarity. This refers to the purity of the gemstone or the absence of internal inclusions, internal particles or spots within the crystal structure. Needless to say, stones with no flaws are hard to find and make your stones very valuable.
Next thing to look at is the duo of size and weight. Due to their nature gemstones vary and specific gravity or density. Size and weight are not necessarily equal from stone to stone. If you have a diamond that weighs 1.00 carats an equal sized ruby would weigh 1.20 carats instead. An Emerald of equal size would be approximately 0.95 carats while an Alexandrite would be about 1.23 carats.
Taking up the hobby of gemstones 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 love to take vacations to go hunting gemstones. Take the example of the US. In Florida you can find Chalcedony and Conch Pearl. Or you can take the time to travel and find opal in Coober Pedy, Andamooka or Mintabie in South Australia, topaz in Killiecrankie, Tasmania or hunt the quartz regions in Beechworth and Mooralla in Victoria Australia.
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In general zircon is transparent to translucent. Impurities cause the various
color. Zircons with a cat's eye effect are known but rare. Some crystals contain
radioactive thorium and uranium. Over time, the radioactivity breaks down the
crystal structure so that such stones (usually green) tend to an amorphous
structure, with a lower refractive index and luster than the crystalline type.
These slightly radioactive zircons are very rare in the trade, but highly prized
by collectors and pose no heath threat to its wearer.
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The Andamooka Opal is a famous opal which was presented to Queen Elizabeth II in
the 1950s on the occasion of her first visit to Australia. It was discovered in
Andamooka, South Australia, an historic opal mining town. The opal was cut and
polished by John Altmann to a weight of 203 carats (40.6 g). It displays a
magnificent array of reds, blues, and greens and was set with diamonds into an
18 carat (75%) palladium necklet
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How To Collect Loose Gemstones
By Lee MacRae
Many people today say collecting loose gemstones or loose diamonds is their favorite hobby. Many people have a great love Of the assorted number of gemstones found around the world today. Follow along as we look at a number of factors you should understand when starting to collect gemstones yourself.
To begin with your first priority is to visit the library and get some books. You want to know as much as possible about precious and semiprecious gemstones. The more you know about gemstones the wiser will be your purchases. You'll know exactly what to buy.
Color is a subjective idea but a very important part in giving value to a gemstone. The closer a color is to its pure spectral color the more highly prized it is. Remember that the spectral colors include violent, blue, green,, orange and red. Colors that are paler or darker than the pure color tend to be less valued.
The cut of a gemstonestone is the next factor to look at before a purchase is made. How precise the cut is is the factor which determines how much light the stone will reflect. It will ultimately ultimately determine the stones brilliance and how much it will be valued.
A third consideration is the clarity of the stone. This is talking about the purity of the gemstone or the lack of internal inclusions, particles or spots within the crystal structure. Without a doubt, zero flaws are hard to find and make your stones very valuable.
Next item to look at is the duo of weight and size. Due to the fact gemstones can vary greatly in density and specific gravity. Size and weight are not necessarily equal from stone to stone. Take the example of a diamond that weighs 1.00 carats and a ruby of equal size would weigh 1.20 carats. An emerald stone would be about 0.95 carats and an Alexandrite stone would be about 1.23 carats.
Taking up the collecting of loose gemstones can create an enjoyable hobby and pastime. And there is such a variety when it comes to gemstones. You can start collecting gemstones like Lapis lazuli, Tiger's-eye or Bixbite (Red beryl) for instance. The varieties are nearly endless. And if money is tight you can go hunting for raw gemstones. Take the example of the US. In New Jersey you can find Smoky Quartz, Agate, Pearl and Prehnite.
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The Ruspoli Sapphire, also known as the Wooden Spoon-Seller's Sapphire and the
Great Sapphire of Louis XIV, is a 135.8 carat (27.16 g) blue sapphire nearly
without flaw. It possesses only six facets and is known for its distinctive
lozenge shape. The legend of the sapphire's origins begins with its discovery by
a wooden spoon-seller in Bengal. It then came into the hands of Italian Prince
Francesco Maria Ruspoli in the 17th century. By 1691, King Louis XIV possessed
the gemstone and placed it in the French Crown Jewels. It was confiscated by the
revolutionary government during the French Revolution. Today the sapphire
resides in the Paris Museum of Natural History.
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Charcas, San Luis Potosi in Mexico is world reknown for it's Danburite the large
clear crystals are easily found on the mineral markets. Topaz is also found here
and can be quite nice. A variety of grossular known as "Raspberry Garnet" is
found in Coahuila and another garnet gem found in Mexico is andradite which
forms iridescent green gemstones. Another green gem is olivine and it is mined
in the Chavira peridot-olivine mines in Chihuahua.
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Tue, 15 Jul 2008 08:08:05 GMT
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