Neck cross with synthetic silk - prayer rope.
It is available in: black with blue bead(size:3x2cm), black with red bead(size:3x2cm), black with blue bead(size:2x1cm), black with red bead(size:2x1cm), black withwhite translucent bead(size:2x1cm), blue(size: 3x2), dark purple, light purple, light blue, pink, burgundy, white and olive green. 
 
The size,  for all these neck crosses, is the same except black and blue which are bigger.