Question

An ornament loses its glitterness quickly why

Answer 1

due to reaction of oxygen with the the metal, non-metal or

metalloide of that ornament

Answer 2

Answer:

Ornaments that loses glitter quickly as they are made up of metals and when the metals come in contact with water and oxygen from the environment or the salts from the sweat, they undergo chemical changes either become oxides or hydroxides.

For that reason, people try to make ornaments with the noble metal like the gold so that it does not lose the glitter easily as they are almost non-reactive to environmental factors.