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DWAYNEH July 5, 2010

What does a "feather" mean in the context of diamonds?

"Feathers" is one of the terms occasionally used in the context of diamonds which I don't truly understand. It has something to do with a diamond's clarity, but what are these "feathers" exactly, how are they created, and how are they reflected in a diamond grading report?

Answers (1 - 2 of 2)

Diamond Expert September 17, 2010

Feathers may come about due to the enormous amount of pressure in the earth where diamonds are formed. Feather scan be found on the surface of the diamond or in the girdle. The feather will not be visible if you are looking at a VS clarity diamond. Feathers do not grow nor do they chip necessarily.

JohnI July 8, 2010

A "feather" is a name for a flaw in a diamond, and is relevant when discussing the clarity of a diamond - an important one of the 4c's - color, cut, clarity and carat weight. The clarity is a strong determiner of a diamond's value and appearance. A feather is a microscopic crack in the diamond. Feathers can be caused during diamond formation in the earth's crust, by the massive amount of pressure that leads to the diamond's formation. Feathers can be within the diamond or extends to the surface. If you look at the diamond with a magnifier, the feather might appear either clear or slightly white. They get their name from their feathery appearance. Although feathers are definitely a flaw which reduces the values of your diamond, having a piece of jewelry with a feathered diamond in it, say a diamond engagement ring or diamond tennis bracelet, poses little to no threat to the diamond's longevity. It takes a heck of a lot for the crack to grow and further damage your diamond jewelry.

 
 

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