This vintage necklace has lovely bright red plastic beads of approximately 8 mm size.  
In between each red bead is an opaque tiny red seed bead separator.   The center focal bead is a 1 by ½ inch ceramic glazed bead.  
The bead is navy blue with abstract designs in white, yellow, orange, brown, aqua and lighter blue.   
The closure for this necklace is a very unique gold-tone heart shaped crab claw style mechanism.  
The necklace measures 16 inches long with a 3 inch gold-tone extender.   The end o-ring of the extender appears to be missing.
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Vintage Bright Red Bead Necklace with Ceramic Glazed Focal Bead
        
          
          
Vintage Red Bead Necklace with Ceramic Glazed Focal Bead, Mod Design listed in:
          
            All Vintage Jewelry
            , Vintage Necklaces