The 925 stamp indicates sterling silver. It means the metal consists of 92.5% pure silver and 7.5% other metals to add strength. It is the standard for high-quality, genuine silver jewelry. This stamp Italy confirms that the piece was manufactured in Italy, globally renowned for its high standard of design and silver craftsmanship.
The "Nike-like" swoosh symbol is likely either a stylized "S" which is a common jeweler's mark, or on the other hand, it could be an authentic piece of vintage Nike-branded merchandise.
There were several collections of sterling silver Nike jewelry (like necklaces, bracelets and rings) produced in the 1990s and 2000s.
