can we tell if these are real Keshi Pearl?

[alexay123]

bought it as 10mm South Sea Keshi Pearl Beads from Amazon (chinese origin) can we tell if this are real keshi without x-ray and saltwater cultivated?

 

[Pearl Dreams]

Not keshi and not south sea.
Bead nucleated Chinese freshwater pearls.

 

[CortezPearls]

100% with Pearl Dreams' assessment