Gemstones Info
Gemstone Information ArticleSo You Want To Collect Gemstones
By Lee MacRae
The term gemology refers to the art, profession and science of evaluating and identifying rocks known as
natural diamonds or
loose gemstones. Many people take up gemology more as a hobby. They become interested in collecting
loose diamonds or
loose gemstones. Some people even begin to visit various locations close by or possibly even in other countries to look for raw gemstones. Some hobbyists will learn to cut or tumble the gemstones they find. If this sounds like a hobby you would like to get involved in read along as we show you the different aspects of this hobby.
To begin with you'll need the knowledge on the wide variety of stones available. This knowledge will help you to know what exactly you're looking for so you buy the right items. Get the answer to questions like how, where and what to buy.
The first criteria you need to evaluate is stone color. Gemstones are the most intensely colored natural materials you can find. Gemstones are so related to color that they've even become associated with particular ones. Without a doubt you will recognize sapphire blue, ruby red, jade green, aquamarine, emerald green or turquoise. Gemstones are valued much higher the closer they are to the colors in the spectrum of orange, green, yellow, violet and blue. They drop in value the farther they are from the natural color.
How the gemstone has been cut is the second most important factor to consider before buying. The precision of the cut determines the amount of light the stone will reflect. It will ultimately determine the brilliance of the stone and how much it will be valued.
Gemstone clarity is our next factor. When we talk of clarity it relates to a stones relative freedom from inclusions or blemishes. A gemstones that is normally found to be clean is definitely worth much more. To see flaws beyond with the eye can see requires a gemstone loupe or gemstone microscope. Serious hobbyists will use a jewelers diamond gemstone loupe 10X for examining coins, stamps and of course gemstones.
Another consideration is the duo of weight and size. Because gemstones can vary in density or specific gravity. 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 equal sized Emerald would be 0.95 carats while an Alexandrite gemstone would be about 1.23 carats.
Although gemstones are normally used for jewelry, they are perfectly good collectibles in their own right. Actually there are many interesting and attractive gems that are simply too big and fragile for use in jewelry. Take each loose gemstone and Think of it as a mini sculpture or piece of art to be highly treasured for its unusual nature and for the craftsmanship of the artisan who shaped it. And in this hobby you don't have to always lay out cash because you can use vacation time to actually hunt for raw gemstones in stead of buying. In the United States in Missouri you can hunt for Pearl, Fluorite, Pyrite and Calcite. And if you travel to Canada you will find nephrite jade in Mount Sidney Williams, British Columbia or labradorite on the adjacent islands and coastal area of Labrador as well as hessonite garnet in Asbestos, Quebec. Take up a hobby of loose gemstone collecting and enjoy yourself.
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Hints On loose natural gemstones
Historically the finest sapphire gems came from Sri Lanka and Burma, and the
same is prettymuch true today. Sri Lanka, nicknamed the "Gem Island," has been
an important source of sapphires, rubies and other gemstones for more than two
thousand years. The stones that have been eroded from Sri Lanka's central
mountains are still plucked by hand from gravel deposits that cover most of the
southern half of the island. Sapphires from Sri Lanka are typically light to
medium blue, and gemstones have been cut that weigh up to several hundred carats
. The National Gem Collection boasts one of the largest fine blue sapphire gems,
the 422.99-carat Logan Sapphire from Sri Lanka. It is the heaviest mounted gem
in the National Gem Collection, and is framed in a brooch setting surrounded by
twenty round brilliant-cut diamonds, totalling 16 carats. The piece was a gift
to the Smithsonian Insitute from Mrs. John A. Logan in 1960.
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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. Due to its high refractive index and strong dispersion,
zircon has great brilliance and intensive fire. The luster is vitreous to a
brilliant sheen. Although relatively hard (rating 6.5-7.5 on Mohs scale) zircon
is brittle and therefore sensitive to knocks and pressure. The gem has the
tendency to wear along facet edges. Its use in rings should therefore be limited
to protective settings or occasional wear jewelry. Zircon jewelry should be
stored carefully.
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Amethyst is also considered sacred in Buddhism. Purple is a color long associated with royalty so it is no surprise that kings and queens have long loved Amethyst. Its use can be traced back to the Minoan period in Greece (2500 B.C.), and at one time the scarcity of this gem made it almost as valuable as diamonds.
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