Date: 2/19/2009 12:39:56 PM
Thanks for your expertise...I did NOT buy this diamond. For my information, what does 'dug' and 'painted' mean, and how can you tell from this image? Just so I can look for it later on. Thanks in advance.
A: They are approaches taken in final stages of polish, or brillianteering.
Painting shifts upper/lower girdle facets toward the mains so angles are closer together. The result is that average girdle thickness where the half junctions meet is greater than average thickness where the mains meet (diagram below).
Q: Why Paint or Dig?
A: Because the most common uses of painting & digging are 'swindling strategies' in answers 1 and 2, above. What is not commonly known is that a measure of crown-only painting on superideal makes can be used to acquire desirable visual properties. Remember that the 'superideal' category of diamonds makes up less than 1% of all round diamonds produced.