We do not provide valuations on Antique Jewelry Investor. You could try What It's Worth To You they do online valuations and are quite reasonably priced. I'm not sure if they do pearl valuations on-line or not. You could email them and make enquiries. Let us know if they do pearl valuations or not, if you have time.
If the pearls are in the original mikimoto box this will add to their value.