I got a bracelet made by www.horsehairbracelets from my old hunters tail..... it gives me something of him with me all the time and looks great. I think they make necklaces too. They are very helpfull.
Hope your mum is Ok ...it takes a long time to come to terms with losing an old friend.
I have just had a bracelet made by Horsehair Bracelets from my horses tail hair and it is beautiful ....they make necklaces too. They were so helpful and although they do designs as per their web site they will make special jewellery as well. Try them www.horsehairbracelets.co.uk