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Here are some more information for Gem Diamond Grading:

Diamonds have long been revered for their incredible beauty and everlasting quality.

When purchasing diamonds you may find yourself wondering why there is such variation in price from store to store. What characteristics constitute a $5,000 diamond versus one that costs only $500?

The grading system for diamonds is based upon four different elements. Firstly, size will play a large role in the price. This is referred to as the "carat weight," and it is determined on a 100 point scale. The larger the carat weight, the higher the value.

After carat weight is obtained, the next aspect that can cause price deviation is the clarity. You can determine the clarity of a particular diamond by a number of features. The term inclusions refers to imperfections inside the diamond, while blemishes refer to imperfections on the surface.

The quantity, type, location, measurement, and tint of its inclusions, or internal facets, as well as its blemishes, or features on the surface, all factor into the clarity. The clarity ranges from the rank of 'pure,' meaning no flaws, to 'heavily included,' meaning that it is seriously damaged.

Therefore the more severely included a diamond is with crystals, feathers, or other types of internal and external flaws, the lower its value. These deformities are due to the cooling process of the diamonds against other materials. Clarity is highly prized, especially in larger carat diamonds where the imperfections are more detectable.

Color is the next factor that determines a diamond's overall value. If possible, a diamond should be as clear as water, but this is not always the case. Colors from other gases and minerals around during the time of the diamond's formation may have altered its clean appearance and left the gem tinted.

There is a scale of coloration that ranges from "D," where no color is present, to "Z," where color is easily visible. There is a spectrum known as "beyond Z," where the colors are rich and vibrant within the diamond and are referred to as fancy colors.

Cut is the final factor in diamond grading. This is an often forgotten element of diamonds, but it is extremely important, as it gives this remarkable stone its ability to come alive.

"Fire" is the ability to flash and flicker upon sight. Cut varies from "excellent," followed by "good," "average," "commercial," and then irregular. If the diamond is not dazzling, the cut is most likely very poor.

Diamonds are rare, but they are not all created equal. It is important to understand the four important C's of carat, clarity, color and cut that make up the value of a diamond. This will guide you towards making a better purchase decision.

Get more information about diamonds today. Discover why man made diamonds are so popular and can be a wonderful alternative to a real diamond, and what to look for to identify fake diamonds so that you are never fooled into mistaking a fake diamond for the real thing.

Diamond Certification Versus Appraisal

Those who are planning the purchase of certified loose diamonds from registered jewelry wholesalers do well to educate themselves on issues related to the diamond market – including diamond appraisal and diamond certification. Although these terms are sometimes used interchangeably, they are in fact two different things, both of which are necessary in order to determine the market value of certified loose diamonds.

Certification

This is also known as a “diamond grading report.” It is used to describe loose diamonds in terms of mass (carat), clarity and color. This report is prepared for jewelry wholesalers, retailers, collectors and investors by geologists who specialize in the sub-field of gemology, or the study and evaluation of precious stones and gems.

All certified loose diamonds are those which are accompanied by such a grading report. This report gives information about the diamond’s objective physical characteristics – those which can be measured with scientific methods and tools. Such a certificate will include an evaluation of the gem’s clarity and color as well as its symmetry and “fire,” or light reflecting characteristics. Obviously, a clear diamond without visible flaws (such as a “cottony” appearance within) is far more valuable than one that contains scratches or internal blemishes.

Rather than receiving a monetary value, certified loose diamonds are evaluated on different scales, which includes the “SI3 Clarity Grade” and a Color Scale that uses numbers and letters D-Z. The latter describes the gem in terms of hue and saturation, with colorless gems being at the beginning of the scale and those with deep color at the end.

While the diamond market and industry is controlled by a relatively few individuals and corporate entities, most jewelry wholesalers agree that the most reliable certifications are done through either the Gemological Institute of America or the American Gem Society Laboratories.

It is important to understand that such labs cannot certify gems that are mounted. However, a reputable jewelry wholesaler should provide you with a certificate at the time of purchase.

Appraisal

Unlike loose stones, a diamond appraisal can be performed on mounted stones (those placed in settings). Unlike certification, it is less objective, and based on estimations made as a result of what can be seen. There are several different techniques for this, but the main purpose is to determine the diamond’s monetary value. Jewelry wholesalers base their selling price primarily on such an appraisal.

The Importance of Independence

It seems obvious that any certification and/or appraisal should be done by and outside, independent agency, but less experienced diamond buyers may not consider that jewelry wholesalers using their own in-house appraisers will have a natural tendency to overvalue their own merchandise. For that reason, it is important to have any diamonds you are considering certified and appraised by an outside third party that is not affiliated with your jewelry wholesaler.

About the Author

Jonathon Blocker specializes in certified loose diamonds, diamond appraisal, and wholesale certified diamonds. He is known among jewelry wholesalers as an expert in his field. He is a consultant for GemFind.net, a trusted name in the jewelry industry since 1999.

Any idea what value this certified diamond is, please see details?

Details:
Certified from the European Gemmological Laboratory

No problem. I plugged the specs you provided (shape, carat weight, color grade, and clarity grade) into a diamond search engine. I used Diamond Price Guru, but there are several available free online.

It came back with 12 similar diamonds, ranging in price from $4,375 to $6,403. All of these were GIA graded, not EGL, and generally GIA diamonds are priced a little higher than EGL, but not much, so I wouldn't worry about that.

The age of the diamond usually doesn't impact the price, so long as it was never worn (so never damaged).

I hope this helps.

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