Judy 175/365

Here is part of my current "project" to find new homes for my parents'
collection of turquoise jewelry that they bought in Arizona when they spent
winters there in the 90s. Most of the pieces are signed by the artist.
I have asked at every craft show where southwest jewelry is exhibited if
they buy from private parties and the answer is always "no". E-bay (if I
could even think about that) has12,000 pieces listed and few are getting
bids.
I contacted a cousin who lives in Tucson to see if she had any contacts for
reselling down there and she knew of no one who did. I spent many hours on
E-bay just getting some comps for prices but don't know where to go with
that. There are many rings, some bolo ties, watch bands, earrings. Any
ideas ladies?