This was to be one of a few Valentines presents.  It's truly a tight choker and I doubt my wife will like it.  It also has a smudge on the front observable surface that may come off with a cleaner.  I'll wait and see if she likes it.  I'll amend this if it works out.  It's certainly easy to put on, but it seems too wide and not "long" enough to fit well around high neck sweater.  The product description didn't say how long it is, and "choker" more adequately describes this than  "necklace" as it is advertised.  Roughly measuring it, it is about 15-16" with a 2" gap at the top.
UPDATE:  returned it b/c it was such an awkward fit and b/c she didn't like it enough to put up with something that fits poorly on her....and she has a thin neck.