Years ago - when I first started with chickens and had hatchery-bred RIRs, I had one of them that just loved me! He would sit in my lap, loved being petted, and liked to sit on my shoulders. One day - after coming in from a visit with all my feathered friends - I noticed one of my diamond stud earrings was missing! I just thought it had slipped out and we tore up the house looking for that earring.
Next day - he's sitting on the other shoulder and I felt this sharp pull - yep, there went the other diamond earring. Never did find them.