The magnets are strong, and there has been no discoloring/fading. The magnet is very strong with little worry of it coming off before you want it to. The clasp is large enough to be pleasing to the eye when working with larger beaded necklaces.

Works perfectly fora 3 strand 18 necklace. I have three chains with pendants that are all the same length. Easy open clasps for each chain. Magnets grab each other with no fumbling.