ideal cut
You may have heard of a term called “Ideal Cut”. This term refers to the attempt to cut a round diamond into the best proportions to achieve maximum brilliance, fire and scintillation.
In order to cut a stone to ideal proportions, much of the rough diamond is sacrificed, leaving a stone with a smaller carat weight. Diamond cutters sometimes sacrifice ideal proportions to end up with a larger, more profitable stone. Industry standard valuation of diamonds does not take into account a diamond’s proportions, thus a larger diamond with fair proportions will be worth more than the smaller diamond with good proportions to a diamond cutter. Consequently, ideal cut stones are rarer and harder for wholesalers and jewellers to find and they are priced accordingly.The diamond grading laboratories have been researching cut proportions for many years but there is still no industry agreement on what constitutes the best cut parameters for round brilliant diamonds.
It is hard for most diamond shoppers to understand diamond cut and what is “Ideal”. There are straightforward standards for colour and clarity grading diamonds, but the diamond industry and diamond grading laboratories do not have a set standard when it comes to cut grading, proportions and what constitutes an “Ideal” cut diamond.
The term “Ideal” Cut Diamond or “American Ideal” Cut is a widely and quite oftenly misused marketing term used by Jewellers and Diamond Dealers to describe a cutting style based on proportions rather than an actual “Ideal” grade by a laboratory.
Because all diamond grading laboratories use different names for their cut grades and a different set of parameters for their top cut grades, usually Excellent, Ideal or AGS0, the best way to compare a diamonds cut grade is by the individual proportions listed on the diamond certificate.
The depth and table measurements, which are used to determine how good the cut is, are given in percentages of the girdle . So, if a diamond’s girdle measures 10 millimeters, the table measures 5.6 mm, and the total depth measurement is 6.25 mm, it would have a table of 56% and a depth of 62.5%. What percentages will yield an ideal cut vary from shape to shape. The tables below gives percentage ranges of a good cut for different shaped diamonds.
Now great quality add the perfect cut could be the one which is much more valueable than others.
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