Posts Tagged ‘Egl’

How To Select The Best Certified Diamond Rings

Monday, May 30th, 2011

 

What’s Written in Your Certified Diamond Rings Certificate
The Gemological Institute of America or GIA is the first to issue diamond class report in 1955.  The GIA not intentionally choose the diamond certificates to be validate the diamond but to acknowledging diamond grade info about the stone.  But the other labs use the certified diamonds report to identify the stone as diamond.  Finally, certified diamonds will provided with the certificate that tells you the characteristics and the diamond weighs itself.  Thus the diamond rings required certificate.  Certified diamond rings need certificate in case the insurance company ask for it when certified the insurance.  The papers then will be an formal document.  It is most suggested to insurance your certified diamond rings, if any it’s gone or taken or other cause might you require to sell it.
The certificate of certified diamond rings, include the various characteristic flaws and grades that the gem in  the ring may have.  The characteristics will be introduced out and written in the certificate.  You will also know the old of the diamond.  The carat, clearness, cut and color are included in the certificate that ever a certified diamond ring is identified, its specification will never change as long as it seen.
After you choose your certified diamond, then you can receive the diamond characteristics report as a certificate.  This can be done with the only diamond or with the mounted diamond engagement ring.  If it’s in a kind of ring then it will be a certified diamond ring.  A diamond ring paper can help identify that the certified diamond ring suits the describe in the certified diamond report, also for insurance purpose.  You should choose at least most well known diamond certificate around the world such as AGS, EGL, IGI or GIA that most good to go with.  Some brands that carry stunning certified diamond rings are Szul, Blue Nile, Mondera and James Allen.

For more info visit our website at http://www.certified-diamondrings.com

Your Diamond Jewelry Certificate

Saturday, May 22nd, 2010

From: diamond engagement ring. One of the most unique features of your diamond jewelry is the individual certificate of identity called the diamond grading certificate. Like people (and some pet animals), your stone’s authenticity and individuality is officially confirmed with this certificate. 

This is actually a report given by an independent gemological laboratory. There are a number of gemological laboratories which hand out these certificates. 

However, only a few are respected by the whole gem stone industry. The most well-known are the European Gemological Laboratories (EGL) and the Gemological Institute of America (GIA).

Individual stones

Each diamond is unique. This individual evaluation is strictly for the gem stone’s quality, not its value. 

The certificate maps out inclusions (imperfections), which are hand-drawn. This authenticates the diamond’s unique identity, since no two stones are exactly alike.

Certificate details

The first information (alongside the issue date of the report) is the Stone ID. This is a unique number assigned to your gem and registered in a global database.

Next listed is the gem’s cut and shape. If the shape is different from the standard round brilliant, it is called a fancy shape. 

The dimensions are listed down as “largest diameter – smallest diameter X depth” for the round shapes. The others are listed as “length X width X depth”.

The weight is listed in carats, the standard unit of weights used for gemstones. (One carat is 200 milligrams.)

The grain lines reflect irregularities in the crystal structure. These are reported as colorless, white, colored or reflective.

The angles and measurements of the diamond that determine its optical properties are duly noted. Table size, crown angle and pavilion depth affect the stone’s appearance.

The certificate indicates the thickness of the girdle (the outside edge of the stone) relative to the diamond’s size, and whether it is polished or faceted.  

The culet (the stone’s bottom point) is listed either faceted or not. If faceted, it is noted relative to the size of the stone.

The grades of the diamond’s finish and polish are noted and described including the symmetry. Color is graded, too, from D (colorless) all the way to Z (yellow).

Symmetry is the arrangement of the stone’s facets (surfaces) and finished angles. Grading reports describe them accordingly, whether they are excellent, very good, good, fair or poor. 

The cut is listed as well as the quality of the stone’s clarity. The clarity is the absence of inclusions (blemishes) and graded from “flawless” to “included” based on the size, nature, position and quantity of the inclusions.

The certificate also notes the pavilion depth (distance from the girdle to the culet) which affects brilliance. Deviations from the Tolkowsky ideal cut are also carefully documented.

Most diamonds “fluoresce” (showing whitish, yellowish, or bluish tint) when exposed to ultraviolet light. They are only stated in the report, not graded. 

Finally, there is a diagram on the certificate that approximates the shape and cut of the diamond. It has markings (in symbols) that include the type, nature, position, and approximate size of a clarity characteristic. 

Gem quality 

Coming from a leading gemological laboratory (the EGL mark appears under ultraviolet light), the certificate will ensure that your diamond jewelry has the quality you paid for. Do your diamonds have certificates?

For more see princess cut ring and diamond emerald cut engagement ring.


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