Care
Gold doesn't tarnish, so care is easy. Wash pieces in warm soapy water with a soft brush, rinse, and dry with a soft cloth.
Take the stack off for the gym, the pool, the sea and cleaning, and put it on after perfume and lotion. Fine pieces are strong but not invincible: don't pull a bangle off by its edge, and don't sleep in the ear cuffs.
Keep each piece in its own pouch. Gold rubbing on gold in one pocket scratches, and fine chains tangle with everything.