I have a nickel allergy and have to be very careful about what I put on my body when it comes to jewelry.  Even some jewelry that is listed as "nickel free" has broken me out or irritated my ears/neck in the past, so I never trust anything until I put it on and try it.  This necklace passed the test with flying colors.  I have worn it for weeks, all day long, with it rubbing all over my neck, and have not gotten any rashes or irritation.  It is sturdy and well made, and I do not feel like I have to be super cautious when wearing or handling it for fear it will snap/break.  It is attractive and shiny in appearance.  I am very pleased all around, great chain.