I inherited a 10k JCM Pearl necklace, brace and earring set from my mother she was given them as an anniversary gift from my step father before she passed away about 7 years ago, he decided that he could no longer keep them and handed them down to me and now I have come into financial hardship don't want to sell them but not sure if I have the choice... Is their anyway to identify or give me an estimation of what I should ask for them? They have never been worn and barely handled only maybe three times by me plus I did do the tooth test and they feel like sandpaper on my teeth please any help would be appreciated... The clasp reads "10k jcm"....