| Heard once or twice that freshwater pearls are 'softer' than other cultured pearls.
Couldn't find any reference about such differences of any usual durability measure (scratch or breaking resistance) among nacreous pearls. In particular, other than noting the lower Mohs (scratch resistance) and over the top toughness of pearls in general, gemology publications yield nothing.
There's no lab in the house... so I am asking here: what is this all about? |