All findings are silver plated.
The acrylic is hard wearing and durable, but to ensure the quality please avoid contact with direct heat and strong chemicals and just clean with a damp cloth. Always store and transport your jewellery in its box. Keep water, perfume and other sprays and lotions away from your jewellery, as moisture can discolour metal parts.
I advise cleaning metal parts with a silver and gold cleaner/tarnish protector after every use.