Diamond Certification

Diamond Certification: The Quality of Your Fine Jewelry

Long ago when diamonds were first being categorized by a grading system, the grade report was termed as a Diamond Certificate. Since that time, gemological laboratories have requested that the Diamond Certificate be termed Diamond Grading Report, so as not to confuse diamond consumers in thinking that any diamond is endorsed by the laboratories, but rather that the diamond in question has been graded in characteristics and categorized by class of the diamond, by the laboratories.

Diamond certificates are the recorded grade report of informational data that accompanies every diamond purchase. Diamond certificates or diamond grade reports, are detailed by a gemological laboratory, which contains the detail the characteristics of each individual diamond, therefore the most important information on the diamond grade report is the name of the gemological laboratory. They retain a copy of each diamond grade report that has been described by their gemological laboratory, and are able to reissue a copy of your diamond grading report, if yours becomes lost.

In a diamond grade report the characteristics of diamond, are listed by the gemological laboratory findings, and include the diamond certificate or report number, which identifies the diamond to the gemological laboratories internal records.

The diamond shape which refers to the silhouette of a diamond.

The diamond cut used for fashioning a diamond or the facet arrangement.

The Measurements of a Diamond's diameter, which are calculated to the hundredth of a millimeter, are also listed.

The Size determined by the carat weight of a diamond.

The Proportions of a diamond, which are calculated by its depth, and its table percentages, are listed.

A diamonds table is the largest facet mass, and is the top flat surface of the gem, a diamonds average width in size. The determination of a diamond being well cut, are graded on these ratios.

A diamonds Girdle is the border concerning the crown, which is the top part of the gemstone and the pavilion, which is the bottom part of the gemstone. Girdle thickness is typically articulated as a range as the variation of proportions can fluctuate from thin to thick in a diamond girdle measurements.

The Cutlet ratio is listed, as a diamonds cutlet it the facet on the lower end of a diamond, though, some diamonds do not have culets.

Next, the characteristics of a diamonds Finish are graded and listed in the diamonds grade report, or certificate.

The Polish refers to the quality of the polish given to the facets while being fashioned, and Symmetry refers to the preciseness of the faucet and their alignment with one another.

Clarity of a diamond is graded on what is visible under a 10X magnifier, and expresses the number, size as well as placement and the nature of any inclusions and surface peculiarities on a diamond.

Special lighting is used in conjunction with a master set of color comparison stones, to determine the grading of a diamonds Color.

A diamonds Fluorescence grading refers to the reaction of a long wave ultraviolet radiation, upon a diamond, the stronger the fluorescence, the less valuable a diamond.

The Comments section of a diamond grade report or certificate is utilized to describe characteristics not conferred in other characteristic listings on the diamond certificate.

A Plot is a graphical illustration of the flaws of a diamond.

The Key of Symbols refers to the characteristics marked upon the Plot. Internal diamond characteristics are plotted in red, and external diamond characteristics are plotted in green.