No close up so cant see the textire and graining .. If these beads are what they appear to be, antique Chinese Rhino Horn, they are extremely valuable . Thousands of dollars (at high emd auction sites like Christies if you cam even fnd them..) maybe someone else could offer an opinion , but imthink the Rhino beads are protected under the endangered species laws today.

If your beads are more modern this forum discussion may be of interest to you. (obviously I love these beads too, so I spent the morning doing some research!)

http://beadcollector.net/cgi-bin/anyboard.cgi?fvp=/openforum/&cmd=get&cG=9343033363&zu=3934303336&v=2&gV=0&p=