Magnetic clasp to add to existing screw clasp

[4Tornot4T]

Hello, Does anyone know where I could get a magnetic clasp to add onto a necklace with an existing screw clasp. My DM has limited use of her hands and can't do her favourite necklace up. We're reluctant to get the clasp changed as it's an antique bead necklace with the original clasp - but will do if there's no other option. Any ideas would be very gratefully received. I've searched the Internet but had no luck. Thank you x

I'd consider putting an extra 1cm of chain one each side and then a magnetic clasp and just leave the old clasp dangling. An old fashioned jeweller could probably do it, or buy the components and do it yourself

Thank you for replying. That's a good idea - I might pop into a jeweller and see if they can do it.