This necklace has the most beautiful square purple marbled glass pieces; I absolutely LOVE it.  It measures 16" long and each section of purple glass measures 3/4" x 3/4".  The are prong-set in a silver-tone (more towards pewter) colored metal.  The are separated by a beautifully ornate link.  There are small chips on the corner of a couple of pieces, but not noticeable (worth mentioning).  The clasp is present and operates well.  This vintage piece is in very good condition.