Diamond | Kelly McLaughlin

May 5, 2010

How to Spot Fake Diamond

In this world of advanced technology it is almost impossible to simply look at a diamond and determine whether it is real or not – especially if you don’t know much about diamonds. There are some steps that you can take to avoid buying a fake diamond, however.

First, only deal with reputable jewelers, and when you find a reputable jeweler, stick with them. Avoid buying diamonds or other jewelry from jewelers that you have never dealt with before in the past. Ask to see the certificate for the stone. If no certificate exists, walk away.

Look at the setting that the stone is in. Fake diamonds, such as zirconias, are usually set in low quality metals. Take a close look at the stone. Fake diamonds are not durable – natural diamonds, on the other hand, are the most durable stone on the planet. Look for scratches or nicks.

After purchasing a diamond, take it to another jeweler for appraisal. In fact, take it to two or three other jewelers for an appraisal to make sure that the appraisals are all fairly close. If you find that you have purchased a fake diamond, you may be accused of making a switch when you return to the store of your purchase; therefore, it is important to have a certificate for the diamond. No two stones are alike.

May 3, 2010

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Fluorescence Diamond

We’re all familiar with the 4Cs of diamonds – cut, color, clarity and carat weight. But diamonds also possess a quality called fluorescence that’s part of the evaluation and assessment of a diamond. It’s actually called photo-luminescence and it’s caused by small amounts of the chemical boron in the diamond. It’s activated by UV light.

It’s graded by how much blue there is in the diamond – None, Faint, Medium, Medium blue, Strong, Strong Blue and Intense Blue. At one time, this was a highly-prized quality in a diamond and the demand for a blue-white diamond was high. The blue indicated the fluorescence of the diamond, while white was a reference to the overall color of the body of the stone. This has decreased over time as consumer preference shifted towards the more colorless stones.

The tide of public preference may be shifting back to the blue-white diamond, but you want to be sure, when buying a diamond, that you examine it under a variety of conditions, such as sunlight and fluorescent light, as well as a jeweler’s black light. Some diamonds with a fluorescent quality can become hazy in daylight or even glow out on the dance floor!

Colorless diamonds have become increasingly rare and expensive. The color grades of D (flawless) to G are going to be hard to come by at a reasonable price. If you’re buying a diamond with a color grade of H or higher, some fluorescence may actually be a good attribute for it and increase your stone’s value and attractiveness, as the blue fluorescence can offset any other gradations in the stone, such as a yellowish tone.

Although some diamonds have a yellow or orange fluorescence, most reputable jewelers will recommend against a diamond with this quality, unless you’re buying a colored diamond in the same hue, as a similar fluorescence will enhance and intensify that color.

Apr 18, 2010

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Gachala emerald

Emerald, the birthstone for May, is one of the world’s most valued gems. Mined by the Egyptians more than 3,500 years ago for the Pharaohs, this precious green stone also has been worshipped by the ancient Incas and Aztecs, the Indian Maharajas and Maharanis, and kings, queens and other royals all over the world throughout history.

The stone is prized for its shades of green, which represent the color of life and the eternally returning spring. For this reason, emerald has held a special religious position in many cultures.
The Gachala Emerald, an uncut 5-cm stone weight 858 carats, was found in Colombia in 1967. It was given to the Smithsonian Institute in Washington, D.C., by famous New York jeweler Harry Winston.
Another huge, rare emerald is the Sacred Emerald Buddha. It resides on the grounds of the Grand Palace in Bangkok, Thailand. This venerable image was, according to historic legend, accidentally uncovered after a lightning strike on a Chedi in Northern Thailand’s Chiang Rai district in AD 1434. The temple’s resident abbot discovered stucco flaking off the image exposing a hidden green colored Buddha statute. The remaining stucco was duly removed reveling what the world now refers to as the “Emerald Buddha.”
The Mogul Emerald is one of the largest emeralds in the world. The rectangular cut tablet, which dates back to 1695, weighs 217.80 carats and is about 10 cm high. One side is inscribed with Islamic prayers and the other is engraved with opulent flower ornaments. The emerald is thought to have come from the reign of Emperor Aurangzeb –the last of the great Mogul rulers, who controlled much of India. It was discovered in Colombia by the Spanish conquistadors and most likely arrived in India through trade during the Mogul dynasty, according to experts. The emerald was auctioned off at Christie’s of London for $2.2 million to an anonymous buyer in 2001.

Apr 8, 2010

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Industrial vs gem quality diamonds

Diamonds are the hardest known naturally occurring material Its hardness has been known since ancient times, and is the source of its name. However, there have been synthetic diamonds created which are even harder. The hardest natural diamonds in the world are diamonds from the New England area in New South Wales, Australia. These diamonds are generally small, and are used to polish other diamonds.

Industrial use of diamonds has historically been associated with their hardness; this property makes diamond the ideal material for cutting and grinding tools. It is one of the most known and most useful of more than 3,000 known minerals. As the hardest known naturally occurring material, diamond can be used to polish, cut, or wear away any material, including other diamonds. Common industrial adaptations of this ability include diamond-tipped drill bits and saws, or use of diamond powder as an abrasive. Other specialized applications also exist or are being developed, including use as semiconductors: some blue diamonds are natural semiconductors, in contrast to most other diamonds, which are excellent electrical insulators. Industrial-grade diamonds are either unsuitable for use as gems or synthetically produced, which lowers their price and makes their use economically feasible. Industrial applications, especially as drill bits and engraving tools, also date to ancient times.

The hardness of diamonds also contributes to its suitability as a gemstone. Because it can only be scratched by other diamonds, it maintains its polish extremely well, keeping its luster over long periods of time. Unlike many other gems, it is well-suited to daily wear because of its resistance to scratching—perhaps contributing to its popularity as the preferred gem in an engagement ring or wedding ring, which are often worn every day.

Mar 27, 2010

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Why Treated Diamonds

Why Treated Diamonds Exist

For centuries, people have always tried to improve objects that are a result of nature. We’ve cross bred plants and even animals to produce new species, and we prune and shape trees and bushes to make them more pleasing to the eye or to create fancy borders around our yards and in front of our homes. When it comes to diamonds, many become treated diamonds by the jeweler, in order to improve their appearance.

Treated diamonds can have improved clarity, improved color and even be completely coated to improve it’s overall appearance. On the positive side, treated diamonds can help people with limited budgets have the ability to purchase a gorgeous looking diamond.

Clarity Improved Diamonds

In order to improve the clarity of diamonds, sometimes tiny cracks in the diamond are filled with molten glass. This can cause the diamond to move up a grade in the GIA grading system, and it does not affect the overall weight of the diamond. The process was invented by Israeli diamond cutter, Zvi Yehuda in 1982. Since this invention, some companies have begun a new process that fills the cracks with bromine instead of the molten glass, however, bromine will sometimes discolor the diamond under certain lighting conditions. It’s always best to ask what method the diamond has been treated with when considering treated diamonds, so that you are not surprised when you view the diamond in light outside the jeweler’s.

Colored Diamonds

There are a few different types of color treated diamonds. Colored diamonds are actually painted in order to take away a yellowish tinge, and make the diamonds appear more white and transparent. Some are colored darker, in order to permanently alter a diamond to a different color by using electron bombardment. Others become treated diamonds by way of laser drills. In the 1970’s people began using lasers to drill miniscule holes into the diamonds to reach dark colored spots. Once they reach the dark colored areas within the diamonds, they are able to bleach them with acid so that they are not as noticeable. Sometimes they finish the laser treated diamonds by then filling the tiny holes with molten glass.

Coated Diamonds

Coated treated diamonds are much like a colored diamond, except for the entire diamond gets a coating of a substance that is designed to make the diamond appear brighter and more translucent to the naked eye. In fact, the coating is so good on most treated diamonds that it can go undetected unless an experienced gemologist studies the diamond for it’s value.

Treated diamonds are often very beautiful, and can be more affordable than diamonds that are not treated. If you decide to purchase a treated diamond, just be sure you inform the jeweler when you bring your diamond in for cleaning, as they may need to use different chemicals to clean it and maintain it’s treatment.

Feb 3, 2010

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Hindu lore rubies

Rubies are a type of corundum, a rare mineral made up of densely packed aluminum and oxygen atoms, which are normally colorless. When other atoms are substituted for a few of the aluminum ones, bright hues emerge. Small amounts of chromium impart the deep red color of ruby, traces of titanium and iron produce the stunning blue of sapphire, and chromium and ferric iron create the delicate orange shades of the extremely rare and costly padparadscha.

Rubies with their fiery hearts have inspired passion and legends throughout history. Rubies are even more rare than was once believed. Since chemical testing has become more common, it’s been discovered that many of the world’s most famous rubies are not rubies at all, but either garnet or spinel. While still beautiful, they don’t possess the hardness nor the rich depth of color found in true rubies.

The color of rubies has given rise to numerous legends, associating the gemstone with courage, power, devotion, passion and love. In Hindu lore, rubies were believed to be the crystallized blood of the demon, Vala, whose body seeded all the mines of the world. When his body was divided, his blood fell over Sri Lanka and Burma, creating the rubies that can be mined from the ground. The sparkle and luminescence of rubies is said to be created by an inextinguishable fire in the heart of the stone. The fire is linked to the life of the person who wears it or owns it, and as long as the ruby burns bright, it is said, the person will enjoy good fortune and good health. So clear is this connection, according to some legends, that a ruby will darken in color if its wearer’s life is in danger. In healing, rubies are the gem of choice to cure diseases of the blood and the heart.