Wednesday, December 31, 2008

Diamond Color

Evaluating Diamond Color

What exactly is diamond color? While most people think of the classic, transparent diamond, which happens to be the most rare and valuable, the colors of diamonds actually range from transparent all the way to a brownish color. There are different saturations of diamond color, and tones.

The Gemological Institute of America, known as the GIA for short, is the most commonly used system for evaluating diamond color. They've created something known as the “GIA Color Grade Scale”, and it has placed a grading system on the many different colors and shades of diamonds, classifying into 22 letter grades.

How Diamonds are Graded

The Gemological Institute of America has certified diamond color grades as “master color comparison” diamonds. When a diamond is being graded, it is compared against these master color comparison grades, to find the shades that match it most closely. The diamond that is being graded must be thoroughly cleaned and all oil must be removed from the surface before being examined, since even small amounts of dirt or oils on the surface of the diamond can alter the color.

A line of master color comparison diamonds or shade chart is set up, with each grade placed about one inch apart, ranging from the lightest and highest graded D shade, to the darkest, graded Z diamonds. The diamond color that is being graded is moved from the left side of the comparison units to the right, until it matches one of the shades.

Diamond grading should take place in a colorless environment, using a balanced fluorescent light source that has a filtered, cool white sun like ray. The room where the grading takes place is dark, all except for the special grading light, in order to obtain the most accurate grading of the diamond color.

Fluorescence of Diamonds

Yet another consideration when considering the diamond color is diamond fluorescence, and how it will effect the actual appearance in the diamond color. Fluorescence causes some diamonds to change color when viewed in our everyday, ultraviolet lighting, as well as under fluorescent light bulbs.

When a diamond color is graded, the strength of the fluorescence of that diamond must also be indicated. It may be considered to be strong, moderate, or weak fluorescence, and the reports must also indicate what color the diamond will change to due to the fluorescence. The reason for this is when people are in the jewelry store, looking at diamonds in the special lighting of the store, they may all appear to be the colorless, transparent diamonds. When you purchase a diamond and get it home under normal lighting, you could find your diamond is yellowish in color!

You can ask your jeweler to provide grading documentation and information about the fluorescent value of a particular diamond before purchasing, to make sure that you will be happy with the diamond you buy. Many jewelers also can show you the diamond under different lighting conditions, which will enable you to fully appreciate the beauty of the diamond before you buy it. Some individuals like a diamond color with a darker shade, while others are insistent on the transparent diamond color. The diamond color is one of personal preference, so be sure to do a little research before making your final selection.

Saturday, December 27, 2008

Diamond Clarity

What is Diamond Clarity?

Diamond clarity is the measure of flaws found in and on the outside of a diamond. The less flawed a diamond is, the more value it has and the higher the price tag. There are very few diamonds which can be categorized as having no flaws at all, however, most diamond flaws cannot be seen without magnification of at least 10 times. Because issues with diamond clarity are often undetected when looking at a diamond, some people consider this to be one of the least of their concerns when selecting a diamond to purchase.

How is Diamond Clarity Determined?

The most well known measurement of diamond clarity is done by the Gemological Institute of America (GIA). It ranks diamonds based on a grading system it created that ranges from flawless diamonds, to imperfect diamonds, with many different grade ranges in between. The better the clarity ranking, the more expensive a diamond will sell for as it has more value.

Types of Inclusions that Effect Diamond Clarity

Inclusions are flaws that effect diamond clarity. They make it so that the diamond is not “perfect”, and there are visual imperfections within the gemstone. Most flaws however, are un-noticeable to the naked eye and can only be seen under high levels of magnification.

There are names for many of the most common inclusions. Carbons effect diamond clarity because they are very small black dots found on the surface of a diamond, which may or may not be visible in regular lighting. Some may be so small that you need magnification to view them. Pinpoints effect diamond clarity because they are white dots along the surface of a diamond. Pinpoints are the most common of all diamond flaws. Clouds effect diamond clarity because they cause what look to be cloudy areas within the gemstone. The clouds are actually made up of many growths of crystals that are positioned very close together within the diamond, and their proximity to one another is what causes the cloudiness to appear. Feathers effect diamond clarity by causing cracks to form within the diamond, that look similar to that of broken glass.

Clarity Enhancements

Diamond clarity flaws can often be fixed or reduced by using a variety of clarity enhancement treatments. Some diamonds are painted, some get lasered in order to remove pinpoints and carbons, and some diamonds undergo a process by which tiny holes are drilled into the diamond in order to reach areas of inclusions within the gemstone, and then the cracks are later filled with molten glass. Having enhancements done to improve diamond clarity decreases the overall value of the diamond, but can improve it's appearance. Diamond certificates should indicate that enhancements were done on the diamond, so ask to see documentation before making a purchase. While most enhancements just cause the diamond to look nicer, some may actually cause the diamond to be weaker, and more prone to breakage than a diamond that has not had any treatments.

Diamond Certificates

Diamond certificates from independent organizations such as the Gemological Institute of America (GIA) provide a diamond grading report, that gives you valuable information about the 4 C's that were taken into consideration when the diamond was priced. It's important that you use an outside source for diamond certificates, instead of the jeweler who is selling the diamond you are interested in, because the jeweler wants to make money on the sale of the diamonds, the certificates may be slightly biased and you could be paying more than the market value of the diamond.

Reasons to have Diamond Certificates

When you go to a jewelry store, or consider making a purchase from an online retailer, the jewelry that has diamond certificates tends to sell for several hundred dollars more than diamonds that are graded the same that are without certificates. This is because the jeweler recognizes that they typically grade their diamonds one level better than an independent grading organization, like the Gemological Institute of America. The GIA is more conservative when grading diamonds because they do not gain anything from diamond sales.

Pay the Right Price for your Diamond

Diamonds are valued according to their quality based on a grading system that makes use of the 4 C's. You should receive diamond certificates (also called grading reports) from independent companies rather than a jeweler, to insure that your getting an unbiased reporting of the value of the diamond. Otherwise, you could be paying much more for your diamond than what the diamond is actually worth.

Protecting Your Investment

Diamonds are not the same kind of investment as buying stocks and bonds, but having diamond certificates gives you a better investment than just having the diamond. Diamond certificates make it easier to sell a diamond in the future, because you have documentation of how much the diamond is worth and why it was valued that amount. In fact, if you attempt to sell diamonds without having diamond certificates, most dealers will not buy from you and you would end up having a certificate drawn up anyway, so you may as well have a certificate grading report created at the time of purchase, for your current protection as well as future possibilities for selling.

Increased Security during Cleanings and Repairs

Many people hesitate to bring their jewelry into the jeweler's when they're in need of repair services or cleaning. It makes people wonder how they'll know for sure that they've received the same diamond back that they brought in. It is an extremely rare occurrence for a jeweler to purposely switch diamonds, however it could happen unintentionally. Diamond certificates act as an additional security measure in this case. They are like fingerprints stored in police databases; they contain all the data needed to match the person to the fingerprints, and diamond certificates have enough information on the diamond to match the diamond with the certificate and the owner.

Saturday, December 20, 2008

Diamond Care

Ways to Clean your Diamond

There are a few different ways that you can provide diamond care for your precious jewelry, in particular, there are different cleaning processes you can use to keep it looking as brilliant and sparkling as the day you brought it home from the jeweler!

While there are many cleaning procedures that can be done from your own home, don't forget that you can almost always return to the jeweler where you purchased your diamond and ask for a professional cleaning. Sometimes cleanings are included in a warranty agreement, so check your paperwork to see if this form of diamond care is provided in your agreement.

Detergent Bath

The most commonly used method of diamond care is cleaning your diamond in a mild, warm water detergent bath. Fill a bowl with warm water, and add in a mild detergent that you have in the house. Some people use a dish detergent, while others will use a gentle bathroom cleaner. Using a toothbrush or eyebrow brush, gently brush your diamond with the sudsy water to loosen any dirt and oil that have found their way to your diamond. Afterwards, rinse your diamond by placing it into a strainer (careful to select a strainer with holes smaller than your diamond!) and running it under warm water to remove all soap. Never use chlorine bleach to clean your jewelry, the cleanser is much too harsh.

Quick-Dip

There are many cleaners on the market for diamond care. Select one and follow it's instructions carefully for dipping your diamond into the cleanser. Once you've dipped your jewelry into the cleanser, you don't want to touch the diamonds, because oils from your fingers can be easily transferred to your diamond. Allow it to dry completely and then wear or return to storage.

Cold Water Soak

Diamond care also includes a process called a “cold water soak”. Fill a bowl with a solution of half cold water and half household ammonia. Place your diamond into the cleanser and allow it to soak for at least 30 minutes. When you take it out, tap the jewelry around the mounting brackets and then swish it around in your cold water solution again as a final rinsing. You can set it out to dry on a piece of tissue paper.

Ultrasonic Cleansing

You can provide diamond care by purchasing an ultrasonic cleansing machine. These machines have a little cup that you fill with water and cleanser, and a place to insert your jewelry. Once you turn on the ultrasonic cleansing unit, it uses high speed motion to clean dirt and oils off your piece of jewelry.

Storing Diamonds

Another important consideration of diamond care is how to store your diamonds when you are not wearing them. Diamonds are gemstones that can scratch other diamonds or other jewelry, so it is recommended that you never place them into a jewelry box or case with other pieces of jewelry unless you individual wrap the diamonds with tissue paper. The best way to properly provide diamond care and store your diamond however, is to place the jewelry piece into a fabric lined jewelry box, or a larger case that has individual dividers that are each lined with fabric to protect each piece of jewelry.

Wednesday, December 17, 2008

Diamond Carat

What is Diamond Carat Weight?

When shopping for a diamond, you've no doubt heard references to the 4 C's of diamonds. Diamond carat is one of those popular ”c's” to consider when evaluating a diamond, and it's a term used to describe how much the diamond weighs. A single diamond carat is equal to the weight of 200 milligrams, or .2 grams.

Diamonds are described two different ways in regards to the diamond carat. An abbreviation of “ct” is used to describe the weight of a single diamond stone while an abbreviation of “ct TW” is used when describing the total weight of an entire piece of jewelry- when it has more than one stone in place.

It's important to recognize that two stones may have the exact same carats, meaning they have the same weight measurement, and yet they are completely different in size and appearance. This is due to the actual density of the gemstone. The more dense a stone is, the more weight they have, and sometimes a smaller stone will actually weigh more than a larger stone because of density.

The Value of the Diamond is Effected by it's Weight.

When selecting your diamond ring, you can choose between a single, solitaire style setting (a single diamond on the ring) and a setting that has multiple, smaller stones to make up the ring. The value of a solitaire one diamond carat will actually be more than if you buy a ring that has two diamonds that add up to one carat or greater. Larger sized diamonds are more rarely found when mining diamonds, making them more valuable and expensive than purchasing the same amount of diamond carats in smaller stones.

Selecting Diamond Carat

So how do you determine what size diamond to buy? Do you want a diamond carat of 1, or 2, or do you want a ring with multiple, smaller stones? The answer to this will depend greatly on your budget, as well as the person who will be wearing the ring.

A diamond will look larger on a slender finger, so keep that in mind if the recipient of the ring has thin hands. The actual diamond carat measurement is probably not as much of a concern as the appearance, shape, and setting of the ring. Particularly because a 1 carat diamond ring will not look half the size of a 2 diamond carat ring, it's far more important to select a ring that is pleasing to look at than it is to buy one with the most carats you can afford.

Determine how much money you have to spend, and then decide on the cut of the diamond. Once you have these two pieces of information narrowed down, you can start browsing the diamonds in your price range, in the style you want, and find out what diamond carat you are in the market to buy.

Sunday, December 7, 2008

Diamond – An Inner Look

Astrologically Diamond is the birthstone of April. It is also the gemstone for the 10th and 60th anniversary. Diamond is supposed to strengthen the planet Venus to increase luxury and enjoyment in your life. If you are a Virgo then according to Vedic astrology Diamond is the right gemstone for you. The glittering color, the four perfect cleavage directions and its endurability has made it the most popular gemstone.

For the interest of Chemistry student Diamond is nothing but a carbon. It is a polymorph of Carbon just like Graphite. Its chemical formula is “C” and only “C”. It’s a native element and belongs to the sub-class Non-metallic. Diamonds are available in wide variety of colors like Blue, pink, white, yellow. The diamond processing industry values the brown diamond much more, which comes in three varieties called Champagne, Cognac and Coffee.

For the Physics students, its hardness is perfect 10 out of 10 in mohs hardness scale. Diamond is the hardest substance, gifted by nature. Just for the sake of interest, Diamond is four times harder than Sapphire or Ruby. Diamond can scratch any other mineral and the myth, “Diamond can only cut a diamond”, is true. The clarity of Diamond is transparent. The specific Gravity of Diamond is 3.5, which is well above the average. Diamond conducts heat the best. For comparison purpose, its five times better than Silver. At this scenario of this very best, the Melting point of Diamond is 3820 Kelvin and the Lattice density is also the highest. Definitely Diamond is empowered with many excellent properties to become the first choice, but again the myth of its indestructible or eternity has been proved to be a foolish notion.

Diamonds are available all over the world. Mostly it is available in Australia, Arkansas, Africa, Botswana, Brazil, Canada, Congo, and Russia etc. A large mine in South Africa has started its operation just five years back.

Diamonds have been used in treatment of mankind for ages. Medical sciences have been able to find its remedial utilities in several accidental and usual disorders due to injuries, fracturing of bones etc. It is supposed to be highly effective in several brain diseases and nervous system disorders. Diamond even helps to control the hormone sequence of the human body.