Hanaleimom
Well-known member
- Joined
- Dec 27, 2007
- Messages
- 1,473
http://www.perlesdetahiti.net/site/en/508.html
"Quality
This is determined by observing the special features of the pearl's surface and luster. But nacre thickness, color, shape and size also judge quality."
http://cpaa.org/valuation.asp
"Pearls are classified by Origin, then graded by size, shape, nacre thickness, color, luster, surface clarity and matching. These qualities are not considered equal. Some factors will be weighted to give them more influence in arriving at a final grade. A very thin nacre thickness, for example, could never yield a fine quality pearl."
"Quality
This is determined by observing the special features of the pearl's surface and luster. But nacre thickness, color, shape and size also judge quality."
http://cpaa.org/valuation.asp
"Pearls are classified by Origin, then graded by size, shape, nacre thickness, color, luster, surface clarity and matching. These qualities are not considered equal. Some factors will be weighted to give them more influence in arriving at a final grade. A very thin nacre thickness, for example, could never yield a fine quality pearl."