knotty panda said:
The website says they're in good shape, attributing that to the silt in the box. What I want to know is, are they fresh or saltwater or a mix, and how are they going to determine what they are.
Yeah... they just do not look quite that 'fresh' in the image. And if they were in wearable condition, I would have expected this bit to be part of the headline... which it isn't. No idea how pearls fare in sea water, amazingly... from those in 'dry' archaeological finds, some are in pristine shape, some simply melt away and all that remains on the jewelry are the tell-tale pegs.
As far as I know, the origin of pearls (freshwater vs. salt, and to some extent more specific origin) can be ID'ed with spectrometry tests which can be performed at the main gemology laboratories. There is a bit of literature I do not remember off-hand (for really casual, pearl-guide related browsing, oups!

)... e.g.
THIS advertising the use of RAMAN spectroscopy to ID types of pearls, and
THIS- using LA-ICP-MS spectrometry to differentiate species of salt and freshwater MOP and nacre.
On the other hand, pearls from archaeological finds have been identified already (or at least their
collection labels pretend as much!)... whether by the standard testing used by gemological labs or not, I wouldn't know. Besides, even for more recent historic jewelry with natural pearls the difference is academic.
This is about all that comes up at a first thought, it doesn't sound like a trivia question, and would bet that at least one of the major labs concerned with pearls (SSEF, GRS, GAAJ...) should be interested. If the folks who found those pearls would consider...
