Diamonds

ACA Gemological Laboratory.

Identify the Ideal by the Eye of the Diamond

Here is a surefire way to recognize Ideal cut diamonds at a glance. Learn to look for the “eye of ...
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Ideal Cut

The Ideal Brilliant Cut: Its Beginnings to Today Introduction Since its beginnings in the early 20th century to the present ...
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ACA Gemological Laboratory.

What is the American Ideal Cut?

Question: What exactly is the American Ideal? Was it Americans who refined the cutting/proportioning process? The American Ideal Cut Ideal ...
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ACA Gemological Laboratory.

The Central Ideal

Have you heard of the ‘American Ideal’ or ‘Tolkowsky Ideal’ in diamond cutting? How about the ‘Morse Ideal’? Michael Cowing explains ...
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