First and second arms are provided for connecting the ring {TAIL ~ top} to {HEAD ~ corresponding locations} on the first and second arcuate elements adjacent to the opening to allow the ring top to be displaced to expand and contract the ring shank while an overall round configuration is maintained 
First and second arms are provided for connecting the ring { TAIL ~ top } to { HEAD ~ corresponding locations } on the first and second arcuate elements adjacent to the opening to allow the ring top to be displaced to expand and contract the ring shank while an overall round configuration is maintained
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH