Gold ring magnet is a kind of NdFeB Magnet, the coating is Gold, we could produce the size according to ... the customer;s request. Gold ring magnetNingbo Bestway could supply different shaps of NdFeB Magnet ... Zinc, Nickel, Nickel+Nickel, Copper+Nickel, Nickel+Copper+Nickel, Gold, Organic Epoxy, Nickel+Epoxy coating Grade : N35-N50, full ... -279]Density p(g/cm3)>=7.5 Gold Ring Magnet