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Showing posts with label Color Diamonds. Show all posts
Showing posts with label Color Diamonds. Show all posts

Home » Posts filed under Color Diamonds

The Pink Diamond

Monday, May 30, 2011 by admin

The pink diamond is the most precious of natural fancy colored diamonds. Naturally colored pink diamonds are so rare that most jewelers will never have an opportunity to see one. The rarity of the stone makes it one of the most expensive diamonds.

Natural colored pink diamonds vary in hue from purplish pink to orangey pink. The cause of the color variation is questionable, but it is believed to be a result of the stone’s atomic structure.

Pink diamonds were first found in India several hundred years ago. Small quantities were found in Brazil and South Africa, but the color was usually very pale with little saturation. In 1979, the Argyle diamond mine was discovered in Australia. The mine produces most of the world’s diamonds and supplies around 95 percent of all pink diamonds. The natural fancy pinks produced in the Argyle pipe are more saturated than those found in the past and are in greater quantity.

The increase in supply and availability of the pink diamond, coupled with celebrity ownership of the stones, have caused an increase in the demand as well as price of the precious gem. In the past, pink diamonds were only made available to royalty. Today anyone can own the stone but must pay a hefty price.

A growing trend in the jewelry industry has made it easier to own a colored diamond. Through irradiation and high heat treatments, plainer diamonds are transformed into fancy colored diamonds. Irradiated diamonds are much more affordable than natural fancy colors and just as beautiful.

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The Yellow Diamond

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Yellow is one of the most common colors found in diamonds. Yellow diamonds range from very pale yellow to vivid fancy yellow depending on the quantity of nitrogen atoms absorbed during the crystallization phase.

Most diamonds are faint or light yellow. These stones are the most affordable diamonds and are becoming more and more popular because of their warm coloring and their ability to blend nicely with white diamonds and white gold.

Vivid fancy yellow diamonds, as like any fancy colored diamond, are rare and rather expensive. One of the largest known yellow diamonds is the Tiffany Diamond. Discovered in a South African mine, this famous gem weighed almost 280 carats before being cut into a 128 carat stone.

About 25 percent of the world’s largest and most famous diamonds are yellow, but only a few are fancy vivid yellow. Because of the rarity of vivid yellow stones, color enhancement treatments are often performed to meet the demands for these beautiful gems. Color enhanced yellow diamonds are more affordable than natural fancy stones and much easier to find.

Laboratory grown fancy yellow diamonds are also growing in popularity. Conditions similar to those found beneath the earth’s surface are recreated in a lab, producing gem-quality colored diamonds in just days.

Yellow diamonds are found in mines worldwide but most often come from South America or South Africa. Only one out of every 1000 diamonds is a fancy colored diamond. The occurrence of a natural vivid yellow diamond is even more rare.

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The Blue Diamond

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The blue diamond gets its color from the boron in its composition. They are mined in Australia and South Africa, and along with the “red” diamond are the most rare and valuable of the colored diamonds. A blue diamond can cost as much as $100,000 to $250,000 per carat, depending on clarity, color, and size.

The most well known of all the blue diamonds is the “Hope Diamond”. Its weight is reported to be 45.52 carats and is classified as a type IIb. diamond. Its current home is in the Smithsonian Institute where it is one of the prime attractions. It is cut in the cushion shape, otherwise known as the pillow cut. It is estimated that the Hope Diamond is worth over $215 million, but it is doubtful a buyer could easily be found due to its turbulent history. The diamond is said to be cursed, and many of its previous owners have not fared very well at all after it came into their possession. It is said to glow with an eerie glow when exposed to ultraviolet light; a fact that only adds to its mystical quality.

The name diamond is derived from the Greek word “adamas” meaning invincible. It is interesting to note that the first diamonds were not mined, but found along river beds. These sparkling crystals were the source of many legends and myths. They were thought to be poisonous in some cultures due to their soft fluorescence. Some colors including the blue diamond were thought to hold magical power, and were sometimes swallowed to help cure ailments and heal wounds.

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The Green Diamond

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Green diamonds, when they are natural, are not only highly sought but very rare. The green diamonds in light hues are not of exceptional value, but the color grades known as “fancy intense” and “fancy vivid” green are quite valuable. The fancy vivid grade will usually be valued at twice the value of the fancy intense.

The most famous of the green diamond family is the Dresden Diamond which got its name from the German city where it had been on display from 1768 to 1942. It weighed in at 40.70 carats and has a vibrant green apple coloring that it got from coming into contact with some amount of radioactivity. It is cut in an irregular pear shaped, and like another famous diamond, The Hope Diamond, the Dresden Diamond has a colorful past. It is reported that the diamond was purchased in 1743 by Frederick Augustus II of Saxony for what would be today a mere $150,000.

Green diamonds have been discovered in Africa, South America, and Asia. A green diamond can be cut into any shape you desire, but it is important to note that the color will often change and lose intensity, when it is cut or when it is exposed to heat. Since natural green diamonds are so rare, Certificates of Authenticity usually bring their prices up considerably. The green diamond is sometimes called “the chameleon diamond” because it color can change so dramatically. It is the ratio of nitrogen atoms, which the diamond may or may not contain during their creation, that gives them their unusual hue, and accounts for their extreme rarity.

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The Brown Diamond

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Brown colored diamonds vary greatly in their shade and hue. They are typically less expensive than other colored diamonds because there is not as great of an appeal to the average consumer. However, there has been an increase in sales recently when the diamonds were marketed as “cognac” or “champagne” colored. The Argyle diamond mine is Australia is the leading producer of brown diamonds.

Brown colored diamonds are considered to be a Type 1 diamond. When they are created, they absorb a noticeable amount of nitrogen atoms which actually absorb blue light. The nitrogen atoms cluster with the carbon lattice and can start off as a pale yellow color. As the nitrogen atoms spread out they absorb green light to appear to be a darker hue of yellow, making them seem brown, light orange, or greenish in appearance.

One of the most famous golden brown diamonds is The Great Chrysanthemum diamond. If was found in the South African diamond minds at a weight of 198.28 carats. Julius Cohen bought the diamond and had it cut into a pear shape. Now The Great Chrysanthemum diamond weights 104.15 carats, and has 189 facets. It is mounted as a central stone of a stunning yellow gold necklace which is made of 410 oval and marquise shaped diamonds. As a rough stone it was thought to be a light brown but after cutting the stone it became golden brown with hues or burnt orange and sienna. It was exhibited in many diamond stores around the world, and has been featured in many diamond museum exhibits. Julius Cohen later sold it to a foreign buyer for an undisclosed amount.

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The Orange Diamond

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For every 10,000 diamonds mined in the world, only one will come out being a colored diamond. This is what makes them so rare, and so hard to obtain. The orange colored diamond is considered to be a fancy diamond, made naturally through the presence of nitrogen and carbon lattice. It has the best of the rare red colored diamond and the brilliance of the yellow colored diamond, so when you see it through the naked eye it looks orange. When you see the diamond, the secondary hues, such as red, orange, pink, purple, and yellow combine to make different variations of color depending on how vivid the secondary hue it is.

Orange diamonds are sometimes synthetically enhanced to make them even more vivid then they are, which actually can make the value more than it already is. In grading the diamond it can be either faint, very light, light, fancy, fancy intense, fancy vivid, and fancy deep. Of course the collectors desire the fancy vivid and fancy deep, which are incredibly hard to find. The most sought after orange diamond is on exhibition in museums around the world. It is called the Pumpkin and was worn by Halle Berry at the 2002 Oscar awards. It is an intense vivid orange color, and weighs 5.54 carats, an amazing buy for any collector lucky enough to be able to purchase this rare and beautiful diamond. It is still to this day the largest fancy orange diamond ever recorded.

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The Cognac Diamond

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Cognac diamonds actually are just a form of brown diamonds. Because brown diamonds are less appealing to diamond buyers as a whole, marketing of brown diamonds as “cognac” or “champagne” colored have been widespread. Naming brown diamonds as “cognac” is an idea that is pushed by the Argyle diamond mine, which is located in Australia. They are one of the largest producers of brown diamonds in the world. By enhancing the image of the brown diamond, they are able to charge more for it because the demand for these diamonds has increased.

Most diamond sellers place cognac colored diamonds under the heading of champagne colored diamonds. This is also how the Argyle Diamond Mine has rated the diamonds coming from their mine. In this case, diamonds falling under the champagne heading are rated from C1 to C7 based on their color. C1 through C6 are variations of the champagne colored diamond, while C7 is reserved for the richer cognac color. If you look at champagne colors on a scale, diamonds on the C1 side are a light straw color and diamonds on the the C7 side are the “cognac” color. The cognac colored diamond is typically a dark orange-brown color. Because of its rich color, diamonds ranked as cognac colored are worth more.

Brown diamonds, of all shades, are found quite frequently throughout the world. Combined with the lack of appeal to the general consumer, they tend to be one of the least expensive diamond choices. The cognac diamond, however, is certainly a beautiful diamond and it might be an excellent choice for someone who enjoys the rich brown shade and does not wish to spend a fortune on a quality diamond.

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The Red Diamond

Saturday, April 30, 2011 by admin

When looking at diamonds, usually you look for a distinct lack of color, as any coloration of the diamond makes it worth less. This is not the case in rare vibrant color diamonds, such as the red colored diamond, which is called a fancy colored diamond. Considered some of the rarest diamonds ever found, they are known to come from Australia. It is not known how many red diamonds there are in the world, but some think there are about 50 left in the world.

Red diamonds are made when nitrogen and pressure creates the brilliant color underneath the earths surface. They are considered impure because of the nitrogen, yet they are so rare that the impurities make extremely expensive. The first red diamond found was the 1-carat Halphen diamond. Today, there are two red diamonds that have been seen, both with a value of over 1 million dollars. They are the .95-carat Hancock diamond, and the 5.1 carat Moussaieff Red. Recently another 5.11 carat fetched an astounding 8 million dollars because of the intensity of the color and the beauty of the ring itself.

The concentration of the color is considered the most important factor, graded with a 9-tiered scale developed by the GIA, Gemological Institute of America. Grades range from faint to fancy vivid. The Argyle mine in Australia produces a very small number of red diamonds and the best ones are auctioned off each year.

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