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Emeralds – The Best Know Gemstone of the Beryl Group

November 26, 2009 By admin Leave a Comment

Natural Beryl - Emerald

The best known gemstone of the beryl group, the stunning green Emerald color is caused by the trace elements of Chromium and Vanadium. In its pure from, Beryl is colorless. A trace of iron can turn the Beryl into an Aquamarine, whereas a bit of Manganese adds a pink color to the stone. Of all the Beryls, Emeralds are the most highly valued and have the longest history. Egyptians used Emeralds as early as 3500 BC, however most of them were pale, drab, and heavily included. It wasn’t until the 1500’s , when the Spanish came to the Americas, that Europeans discovered how beautiful Emeralds could be and vast quantities of Emeralds were brought to Europe by the conquistadors.

The name “Emerald” derives from the word smargus, which means “green gemstone” in Ancient Greek. Emeralds are seldom clear, but contain a miniature world of inclusions characteristic of certain minerals or patterns can be used find out the country of origin and also the mine that produced the gemstone. Emeralds are commonly oiled with polymers and epoxies to fill cracks and inclusions and enhance the color and appearance of the gemstone. This is considered an acceptable trade practice as long as it is disclosed to the buyer. Some fillers are more stable than others, but it’s usually not possible for salespeople to know exactly what an emerald has been filled with. Most Emeralds should be re-oiled every few years to preserve their color and should not be cleaned using ultrasonic cleaners.

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Emeralds

November 9, 2009 By admin Leave a Comment

Emerald Cocktail Ring

If you are a jeweler or jewelry enthusiast, you might be surprised to learn that many gemstones are consolidated in one way or another. From diamonds, rubies, sapphire, and on down to "smaller stones, treatments are quite common. Types of treatment and the reasons for treating a stone are very dependent classification of rock. Some estimates suggest up to 95-99% of all emeralds are treated. Most are treated to improve the passage of light within the rock. Physical makeup emerald crystal, with its natural small cracks just makes sense to do so. As with those more stones, natural stone properties, which simply dictate accessories are acceptable and which are not. A perfect example of this would be treatment heat of Tanzania. Before heating, Tanzania is a brown, but always turns blue or purple color after heating. Method enhancement is accepted because foreign agents were introduced coloring method is common practice, and is generally fully disclosed to the buyer.

Cedarwood Oil

Many centuries ago, the Greeks began using colorless oil to improve appearance of emeralds taken from Egypt. The oil would fill the natural cracks and fissures in the stone to improve how light can pass through stone. Practice is still very common today. In fact, it is most widely practiced and accepted method emerald enhancement. Today, most natural colorless oil of cedar wood is used and has been in the past four decades. This is not permanent, but is quite stable. In time, some oil may evaporate out or "leakage" from the stone. When this happens to rock slightly oiled, change in appearance will not be significant or even visible, but may be harder on those treated. Note that we are not talking about months or even a few years, but probably over a decade or more. Jewelry Ultrasonic cleaning and remove harsh solvents, also treatment of cedar oil and possibly other types of treatments as well. This cleaning should be to be used on emeralds. If a stone loses enhancement oil, most can be withdrawn.

Epoxy

There are several types of treatments epoxy, therefore, we speak about them in a very general sense. They are as varied as they are applied to emeralds, and, Of course, some are better than others. Epoxies are used to fill naturally and unnaturally, fissures and cracks appearing in rocks. They are used much less than the treatment of cedar oil and are considered less desirable treatment option. The practice of using an epoxy is supported to an extent. When done properly, the treatment can significantly improve the appearance and transparency of a stone. Some may be used for to mislead the buyer .. So be aware of what is there. Embassy of the emeralds you have little to worry about. Sources Our established and reputable. We feel very comfortable because we know we provide stones sources share the same high quality standards that do.

Gematria

Gematria was developed in 1997 as a way to permanently treat emeralds, leaving them in a stable condition and permanent once completed. The process was defined as "branding gem" and begins with a very extensive stone cleaning, which may take weeks or even months in some cases. Small stone's flaws and cracks are then filled with gematria colorless substance, which is said leak or discolor. Substance also contains a flare that illuminates blue under ultraviolet light.

According to manufacturers of treatment, you gematria put stones treated in an ultrasonic cleaner, a boat, and even stone recutita without damage. Stones are sold with an American Laboratories Gemological (AGL) report.

ExCel

Other emerald treatment process developed by the process of gematria. This process includes the item tracer which was currently under previous treatment because of incompatibilities and the emergence of many counterfeits that mimicked the effect of the light tracer ultraviolet. Information on GEM is laser engraved on the stone belt.

Palm Resin

Also known as de Palma, this is an oil-like treatment of plastic is used instead of Cedarwood oil. Treatment is not stable or permanent and tends to leave a milky-white residue. It is still used, but is not considered an acceptable treatment.

Opticon

Treatment software which first appeared in the 1980 Brazilian emeralds. Use of this treatment was not disclosed and was considered a method of free the ethics of enhancement. Opticon substance is green but may turn yellow over time. Many feel that Opticon treated emeralds are easily detected by their appearance compared with untreated or treated stones typical Cedarwood.

PermaSafe

This permanent, synthetic resins Treatment Emerald resin was developed by Gemologico Centro para la InvestigaciÃƒÂ ³ n from Esmeralda (CGIE) in Bogota, Colombia. (Center for Emerald Gemology investigation), treatment was intended to be an alternative to gematria and Excel Colombian continuous treatment. It is assumed a stable, permanent treatment that will not evaporate or drain and safely may be subject to ultrasonic cleaning. Same resin was used in other commercial applications outside the jewelry industry.

Joban

A treatment commonly used in India, using a green oil, not only to fill the mask cracks and fissures in stone, but to also give a better color. The process is considered unethical.

Paraffin

Usually used on emeralds from Africa, wax is used in a form of oil or wax.

Embassy Emeralds was founded in 2005 with the goal of building a successful business by bringing high quality Colombian emeralds at good prices to those who share the same appreciation for these captivating green treasures. My vision for Embassy Emeralds is simple. I intend for us to become your trusted source for Colombian emeralds. Quality stones, pricing, service, and attention to the customer will be the things you remember about your buying experience with us and we will do everything necessary to ensure that this is the case. We buy only high quality emeralds in Colombia and only from reputable sources and I personally handpick each stone to ensure each one measures up to my high standards of quality.

For more information or to see our catalog of fine loose emerald gemstones, visit us at http://www.embassyemeralds.com

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Green Beryl

June 10, 2009 By admin Leave a Comment

Brilliant Cut Emerald

The definition of “Emerald” varies depending on the user. Typically, at gem shows and retail stores, most Beryl that looks more or less green is typically labeled as an Emerald. However, most gem dealers feel that light green stones should be referred to as “Green Beryl” and only the darker green stones should be called “Emerald.” American gemologists feel that Beryl colored by Vandadium can be classified as an Emerald, but European mineralogists tend to believe that true Emeralds must be colored by Chromium.

In reference to pricing, the definition of “Emerald” is irrelevant. If a one-carat Beryl has a saturated green color and is transparent and eye-clean, it can be worth over $6,000 retail. Transparency is everything. If a Beryl is light green and has poor transparency, it usually isn’t worth much, no matter how it’s labeled. Low-grade Emeralds or Beryl can sell for a little as $10 per carat, and can be flawed with inclusions and cracks, especially if it has a deep green color. Nevertheless, clarity and transparency play a major role in Emerald pricing.

Almost as much as 50 percent of the world’s Emeralds are mined in Columbia, with the mines of Chivor, Muzo, and Coscuez producing the bulk. Other Emerald sources include northern Zambia, Bahaia, Brazil, Afghanistan, and North Carolina in the US.