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What is a megascope report and why do I need one? |
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| A megascope is an instrument that spins around the diamond and uses a laser to measure every single facet
and proportion of the diamond to incredibly high resolution (one micron, 0.001mm). Color and clarity are very easy to measure
by a trained gemologist and is not rocket science -- you simply compare one diamond to another. But cut is completely different.
It is the least understood even by people in the jewelry trade, and is something often left to the engineers, mathematicians and
statisticians that tell the Gemological laboratories what proportions a diamond should be cut to, to get maximum fire from a diamond.
For more on cut, go here. |
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If you are making a significant diamond purchase you want to know that you are making a sound investment.
Most Gemological reports sum up a megascope analysis and only give a final cut grade, leaving the customer wondering, "What
does a 'good' cut mean?" Others will give table size, depth, etc. They do not tell you how good each specification is in
the overall grade. So you may have a poor table size, but the other specifications may be very good and pull it up to a "good"
cut, but the table size will hinder the refraction of light. Our megascope is the same machine used by Gemological laboratories.
We will let you see the megascope report yourself. Every report has a "report number". This report number will also
be on an independent GIA appraisal, stating that all specifications are deemed to be 100% accurate. We will expose to you all
the "raw" numbers and the tolerances (ranges) of each cut parameter. See the sample megascope report below: |
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The megascope report above not only shows the average value for each specification, but also the range.
For example, the diamond above has an average table size of 62.2%. But it also tells you the upper and lower specification for
the table size for that diamond (it ranges from 61.7 to 62.8%). This is vital, because someone else may say they have a diamond
with a good average table size such as 62.2%, but it may be more oval in shape then round, and the range could be very
high, such as 53.2 to 71.4%, which is not a good table size. |
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Another very critical part of the equation is the "off-center" of the diamond. Most Gemological
reports do not include this information, but it is important in the overall grade. If you see in the example above, the table
has an off-center of 0.6% and the cutlet has an off-center of 0.4%, these are very small amounts, which is why the diamond has
"very good" proportions. Any thing above 2% will result in significant loss of light. Do you know how off-center your
diamond is when purchasing elsewhere? |
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Another advantage of the megascope report is that all the specifications for each cut parameter are
outlined in the box in the bottom left hand corner, and each cut parameter is assigned a grade of Ideal, Excellent, etc. These
are the GIA specifications, not EGL or HRD which allow for much wider ranges. So as you can see, an "ideal" table size
according to GIA falls between 53.0 to 57.5%. Excellent is 51.0-53.0% or 57.5-63.4%, etc. So you will know how good your diamond
is for each cut parameter. |
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Finally, a purchase at DY Jewels for any diamond jewelry containing diamonds over 0.40ct each come with a
free megascope report analysis. This takes the "human" factor out of grading the cut of diamonds, when buying a diamond
insist on a megascope report. Most institutions can not offer this technology because of the high cost of the machines. Any
diamond we sell that has a "good cut" will have all the best parameters to create a good cut, and we will disclose all
specifications to you. We have nothing to hide and with a megascope report, nothing can be hidden. We cut all diamonds ourselves
and take great pride in the quality of our master cutters. As mentioned above, every report has a "report number". This
report number will also be on an independent GIA appraisal that will also include an evaluation of your diamond(s), stating that
all specifications are deemed to be 100% accurate. If either the megascope or GIA appraisal is shown by any major Gemological
laboratory to be inaccurate, we will refund 100% of your funds no questions asked and credit you an additional $500 for your trouble.
This is how confident we are as to the accuracy and precision of our megascope. If you have any questions or concerns about megascope
reports, please email us. |
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