Why all PNJ gold products are under warranted but necklaces, 24K bracelets are not?

Necklaces, 24K bracelets are manipulated entirely by hands, tattooed & engraved that are very thorough and meticulous in every detail. If you use improperly, it will be easily broken or deformed (Because the characteristics of 24K is very soft and brittle) and can not be welded to itsoriginal integrity.