Happy New Year! Basically, before you can sell, you have to know what you have and the value.
Can you take the jewelry to a jeweler in New York and get a verbal, for example, if over $1000 you will get them to appraise. Genuine Pearls have to be appraised in-store.
The other pieces you mentioned could be appraised on-line. For on-line appraisals you will need clear photos of each entire item and also close-ups (if you can manage) of any marks.
We can help with brokering a sale, there are fees involved, and we only consider highest quality pearls and fine jewelry.