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| Monday, March 3, 2008 |
| Guide to Diamond (Part 1) |
There are 4 C’s in grading diamonds. They are Carat, Color, Clarity and Cut.
Here is a brief description of each:
Carat:
The carat weight of a diamond is usually mistaken for its dimension, not its actual weight. 1 carat equals 0.200 grams. Many expensive diamonds may look small but are cut deep, and therefore have a larger carat weight, than one that is cut shallow.
While the carat weight is an important factor when selecting a diamond, many people will always look for dimension. Here are the approximate dimensions for a few popular sizes:
0.25ct= 4.1mm
0.50ct= 5.2mm
0.75t=5.9mm
1.00ct=6.25mm
Color:
Grading color in the normal range is to determine how close the diamond is to colorlessness. Most diamonds have at least a trace of yellow or brown. With the exception of some natural fancy color, such as blue, purple, pink or red the colorless grade is the most valuable.
If the diamond does not have enough color to be called fancy, then it is graded in scale of colors ranging from Colorless to Light Yellow,”D” through”. A diamond with a “D” color is considered to be colorless. If the color is more intense than “Z”, it’s considered fancy. A fancy yellow diamond fetches a higher price than a light yellow diamond.
The laboratories only grade diamonds which are unmounted or “loose” and they do so under special light. Once a loose diamond is mounted, or “loose, and they do so under special light. Once a loose diamond is mounted on a ring, even the trained professional cannot always tell the different between, as a “D”,”E” or “F” color diamond
Here is a chart for reference:
Clarity:
The clarity of the diamond refers to how clear, or “clean” the diamond is. The more ‘clean” the diamond is, the higher the price. Most diamonds have ‘imperfections’ in them. The clarity scale is a measure of the severity of those imperfections or ‘inclusions’ it is known in the trade.
Here is another chart for reference:
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posted by Fezix @ 10:52 PM  |
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