Apart from the fact that georgina seems to have removed most of her jewellery listings, my opinion is that they weren't worth getting a jeweller's valuation on.

I recently had 3 rings valued at a cost of $160 ($60 then $50, $50).  As the total valuation was over $6k it was justified.  But for anything less than $300 is hardly worth the expense.

I do agree with other posters advice - as much ACCURATE detail, and good photos.