To prevent damage, we recommend storing your item in a soft cloth pouch away from other products, and avoiding exposure to household chemicals, cleaning products, soap and humidity.
Every products are gold plate, 5 microns, but brass can tarnish naturally over time. You will receive a polishing cloths (with polishing compound embedded) so you can polished the jewel by yourself when it tarnish and keep a high quality over time. (Don't use it if your jewel don't tarnish, you will remove the gold plate).