Often white or clear diamonds are known to be more valuable but there has been a misconception about colored diamonds. To many people these diamonds are more valuable than the white diamonds because of the intense color. The Kimberly Octahedron, which is 616 carats, is considered one of the largest and most valuable colored diamonds in the world.
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| Kimberley Octahedron |
Since these colored diamonds are very rare, many jewelers may never see one at all. In most cases yellow diamonds have been treated. Among 100 of the largest diamonds taken from a sample, thirty will be yellow, one will be a fancy yellow, and one will be treated.
Among the largest and most rare colored diamonds, are those that originate from the Argyle Mine in Australia
http://www.yellowdiamonds.co.uk/
