Oh wise one's please help me! Having asked DP to help me untangle my hair from my necklace he is threatening to set light to it! At one point it was still around my neck . Thankfully he was able to cut it with a razorblade 
Only thing is I'm running out of alternatives - its 18ct white gold , expensive fine chain.
So what else can we try or actually does burning the hair seem like a reasonable thing to do?