From a shopper's view...

I would not expect to see lab reports on offer with pearls, but surely would appreciate the potential to ask for one. As far as I understand, lab reports do not offer quality grading on pearls anywhere, only attest origin, treatment and type (natural, nucleated, salt vs. freshwater... etc.).

You may find this discussion about offering lab reports interesting: the shop in question does not precertify their merchandise, but invites buyers to ask for an AIGS report if they want to. Is this institution anywhere near you? Not sure how well equipped they are for pearls, but it is the only lab I know well outside Europe and the US.

My 2c.

Any chance to see pictures of your pearls?