This beautiful statement necklace is just shy of 18", but has a 1.5 inch extension chain, making it a total of 19.5 inches at the longest setting.  The decorative front features five decorative pieces.  The two on the left and the two on the right each feature 20 clear/white rhinestones and one round blue stone (possibly glass?), for a total of 80 rhinestones and four blue "stones."  The main center piece features 44 of the matching pointed oval (leaf) shaped rhinestones, one round rhinestone, and five of the round blue pieces, giving a grand total of 124 leaf-shaped rhinestones, one round rhinestone, and nine blue pieces, for 134 "stones" all together.

The round blue pieces are UV reactive - they glow under blacklight.  The metal appears to be bronze in color, but I'm not sure of the actual content of the metal.  The chain sits flat, and the parts that are a little more worn on the back look more copper.  Please see the provided photos.  This piece is meant to look like vintage costume jewelry, but it was available in Target back in 2017.  The tag says SugarFix, which is from a company called Baublebar.  I do not know if the rhinestones are glass or acrylic or something else.  The necklace has a lobster clasp.

I do not see any missing stones.  There is some wear on the back that shows up as a copper color.  Please see the provided photos.