These types of beads aren't necessarily created from metal. They can be produced from glass and have a metallic coating to give a more shiny visual appeal. The only draw back of the metallic luster end is always that it may use off and tarnish speedily. My colleague David Gewirtz https://spoilmevintage.co.za/2024/10/31/unlock-the-secret-to-stunning-styles-with-temus-yellow-beads-you-wont-believe-the-looks-you-can-create/