* * Mohs seawater pearls are real * *. There are obvious differences between seawater pearls and freshwater pearls because of their different growth environments. Seawater pearls usually have a core, most of which is round; Freshwater pearls are mostly flat.

But I don't know the specific situation of "Mohs seawater pearl", so I can't make a more accurate judgment on its authenticity or value. If you are interested, it is recommended to consult a professional jewelry appraisal institution or experts in related fields.