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Client
Previews 
Diamond
Certificate Terms:
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AGS:
American Gemological Society Laboratory (This lab grades cut) I think
that for the mose complete dataset that the AGS lab offers both the
seller and the buyer a great service, in that the data can complete
assure the most actively beautiful diamond possible, and the cut grade
and grading of the catagories makes it a snap to assure that the diamond
you purchase is the finest possible in the world! To search only AGS
graded diamond try my new site called IdealDiamonds.com
for the best of the best in the world of diamonds.
AGS-0: Diamond has AGS-0 Ideal Cut proportions for that catagory
AGS-000: Diamond rated by AGS, ideal polish, symmetry, and proportions. Commonly called "Triple Zero" I love this grade, for crown angles and pavilion angles are perfect for the brightest and most lively diamond possible... When you purchase a triple AGS (000) diamond the later upgrade is very easy too, for unlike GIA the angles are listed on the certificate, and all the data is there that you would need to assure perfection.
Carat Weight, unit of measure for gems, equals 200 milligrams.
Clarity: The clarity grade of the diamond listed.
Color: The color grade of the diamond, "D" is perfection, no real color impact down to "G-H" When you are considering what color is best for your world consider this... In platinum the colors that jump out are the "D-E'F" colors with "G" in a push, for gold trimmed or totally gold items you can very safely move color to "G-H-I" for a bright and white look.
Crown A flared cylinder with one end notched to form prongs
Culet: Culet size (bottom point of diamond). described as, None for perfect, Very Small and Small in most cases
Cut: Proportions rating as determined by Sarin Analysis.
Comments: The gemoligist's additional comments regarding identifiable trates of the diamond, grain lines, or inscription notation
Ideal Cut: This term describes a diamond conforming to the AGS ideal cut standards.
Depth: Total Depth measurement in percent from the table to the culet.
EGL-LA: European Gemological Laboratory - Los Angeles.
Finish: This on the GIA cert contains polish and symmetry descriptions.
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Excellent: As cert description indicates
exceptional attention to detail (Gia's higherst rating, AGS's second
highest
Very Good: This term is going to basically describe the catagory as very fine attention to detail, and frankly at this point I find personally sheer perfection...
Good: Good on a GIA or AGS certificate is the benchmark of appearant perfection and no denegrating features in that catagory what so ever, in the "Good" range is where your dream diamond lives for most, past that is sort of a lab rat's premium... {Grin}...
Fluorescence: The tendancy to "Glow" when exposed to UV light, described as...
Here's an article by the President of the GIA you might find interesting, but basically this is a non-event and should not rule out a fine diamond
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Inert or None,
Faint,
Medium,
Strong
Very strongl
In the "real world" up to medium is no problemo...
Girdle: Largest facet on the widest edge, sub-letters (p) Polished, (f) Faceted
Girdle edge can be laser inscribed with GIA Diamond Grading Report number.
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XT: Extremely Thin Girdle
VT: Very Thin
T: Thin
Med: Medium
SLK: Slightly Thick Girdle.
TK: Thick Girdle.
VTK: Very Thick Girdle.
XTK: Extremely Thick Girdle.
*Most Desirable is Medium, or not more than two steps
Pavilion: Lower half of the diamond, Pavilion depth measurement in percent.
Plot: The map of the activity in the diamond, or slight imperfections, but done more as an exaggerated roadmap for the next grader or gemologist.
Premium: This term can also be associated with the AGS grade (1) in any given catagory, and this is also a great place to get all the dramatic beawuty of the finer cuts, even if outside the range for ideal by just a whisker... No denegration in this description, guaranteed!
Sarin: Computerized Proportions Analysis to determine the proportions of the diamonds that they grade.
Shape and Cutting Style: The shape of the diamond, These would included in the most general cut shape types.
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Round Brilliant
Radiant Cut
Princess Cut
Pear Shape Cut
Oval Cut
Marquise Cut
Emerald Cut
Trillion Cut
Measurements: The millimeter measurement across the diamond, the widest and narrowest are listed in the round, then depth. Diamond rounds are described with three measurements, the widest and narrowest diameter and the depth, in that order. For fancy shapes be sure and do the math too, mand the aspect ratio is critical to the look of a great diamond in the fancy shapes. Take the marquise for example, which si best at a 2:1 aspect ration, or twice as long as it is wide. The oval is best in the 1.5:1 ration, as is the pearshape and the emerald cut. You will find a range for cool in fancy shapes, just call to discuss any in depth questions you might have further.
Table: The large facet on the top of the diamond, refered to as a percentage of the diameter of the measurements. In a round diamond this range for the table is listed in my "What is an ideal cut?" page in depth.
Weight: The carat weight of the diamond graded in the lab report.( 1 Carat = 200 milligrams. )
