Quote:
Originally Posted by Valeria101  Does this mean that the nuclei of these pearls are all the same size and the quantity of nacre deposed on them accounts for the (vast) difference of size between the pearls? |
Yes and no: We could witness that the size of the nuclei which are inserted is not the same for all oysters.
It also seems that the thickness of the nacre produced by 2 oysters might be different even if they were grafted the same day and spent the apparently the same time in the water in the same conditions. I mean that it seems that the thickness of the nacre also seems to depends of the oyster stamina.
All the best,
__________________
Vincent Pardieu,
"Travel addicted gemologist"
http://www.fieldgemology.org
Note: Any views expressed here are V. Pardieu’s opinions and do not necessarily reflect those of the Gübelin Gem Lab (
www.gubelinlab.com ) where he is an employee since Feb 2007.