What is Ideal Cut Diamonds?
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In the early 20's a mathematician named Marcel Tolkowsky published his calulations results which established what is known today as Ideal Cut.
Let's get some general education regarding the diamond's terminology:
Many people refer to a diamond's cut having the shape in their mind.
A diamond has three parts: Crown, Girdle and Pavilion.
The part of the diamond that is actually seen from the top is the Table and the Crown.
A Table is the large facet on the top of a diamond.
Some diamonds also have a
"Culet" that is a little flat facet at the bottom of the pavilion.
A good example of an Ideal Cut Round Brilliant Diamond
will be one that has the Culet marked on the certificate as "None", or "Very Small".
The depth of a diamond represents the distance between the Table and the Culet.
A diamond that was cut too deep or too shallow will let more light escape
from the sides or the bottom.
So, what is an Ideal Cut Diamond?
- Table - 52.4% to 57.5%.
- Depth - 56.8% - 64% .
- Crown Angle - 33.7° to 35.8°.
- Pavilion angle - 40.2° to 41.25°.
- Girdle Thickness - Thin, Medium, Slightly Thick.
- Culet Size - None - Medium.
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