The Gemstones Scene Review

Featured Gemological Article

The Hobby Of Loose Gemstone Collecting

By Lee MacRae

For many people collecting semi-precious and precious gemstones like loose diamonds or loose gemstones is a passionate hobby. They love the colors and the beauty of the various gemstones found around the world today. Read long as we examine the things you need to know when starting to collect varieties of gemstones yourself.

To start off right you'll need the knowledge on each of the gemstones out there. This knowledge will help you to know what exactly you're looking for so you buy the right items. Without the proper knowledge you can make costly mistakes.

Number one to look at is the color of the gemstone. Top grade gemstones have colors that are close to the purest spectral colors of orange, green, yellow, Violet or blue. Gemstone colors that are muted or too dark can lower the value quite easily.

Gemstone cut is very important and factors into appraisal of diamonds but along with your gemstones. A good cut showcases the natural color of the gemstone, lessen any inclusions and show off its symmetry and proportions. One way to determine the precision in the cut is to consider how consistently it reflects the light over the stones complete surface. But if a gem is cut too shallow, most of this light were refracted away rather than reflecting internally. The gem appears washed out.

Next to look at is the aspect of gemstone clarity. Clarity is the term that refers to internal flaws (inclusions) or the external blemishes of a stone. Normally large flaws are visible to the naked eye while others require close examination using a 10X magnification.

Next to consider are weight and size. Save for pearls and corals, all gemstones are priced by the carat. One carat is the equivalent of 0.2 grams Be aware however, that size and weight and gemstones are not the same. Density or specific gravity can vary in gemstones. Take a diamond that is 1.00 carats in weight and you will find that a Sapphire or ruby of the same size would weigh 1.20 carats.

Getting involved in collecting gemstones can become an enjoyable pastime and rewarding in the long run. You can start small and don't have to spend a lot of money and yet you can end up with some very beautiful stones. Many people love to take vacations to go hunting gemstones. Take the example of the United States. In Arizona you can find Agatized wood (Petrified wood), Azur-Malachite, Turquoise, Garnet, Peridot, Jasper and Moissanite Or ou can take a longer vacation and find opal in Opalton, Yowah, Queensland, Austalia, topaz in Mt Surprise or O'Briens Creek in Queensland, Australia or hunt the quartz regions in Beechworth and Mooralla in Victoria Australia.

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An opal is actually what is known as a mineraloid, a shapeless gel with silicium
dioxide that was deposited at a low temperature in crevices and fissures of all
different types of rock. The most common types of rock where they were deposited
are limonite, sandstone, rhyolite and basalt. It can also form original fossils
or replace fossils that have already been formed, and collectors find this
phenomenon very interesting. Opals are relatively young gems, and they are so
fragile they could never have survived early geological upheavals that produced
other types of stones. Opals did occur in volcanic masses of calcite that filled
the veins in lava rock. Hot, briny gel like mixtures would rise up to the
surface from the volcano which decomposed the calcite. What was left behind was
colloidal silica, and this along with water later produced opals.
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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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The name �tourmaline� was derived from the Singhalese expression �tura mali� which translates as �stone of mixed colors�. Because tourmalines are a complex crystal often mixed with elements such as aluminum and boron, it occurs in more colors than most minerals, and can even have more than one color or hue. Green and red are the better known colors as well as multicolored stones. Depending on the angle of view, the color will be different or at least show a different intensity. In the 17th century it was found that tourmalines become electrically charged when under pressure or heated. This discovery attributed it with magical powers. Some believed the pink tourmaline attracted love, and the green brought success.
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Fri, 05 Dec 2008 23:55:00 GMT
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Tue, 09 Dec 2008 12:55:05 GMT

Israeli Diamond Portal Reports: AWDC Sums Up World Diamond ... PRLog.Org (press release), Romania - 6 hours ago This, he said, will translate to a decrease in demand for loose polished diamonds at wholesale of about 20%, and a 35% fall in the amount of rough diamonds ...