Platinum Quality Platinum is the most durable of fine jewelry metals. It does not chip or splinter easily, making it perfect for diamond and gemstone settings. It is similar in color to white gold, but compared side by side, the difference is clear. Platinum jewelry is usually 95% pure platinum with 5% iridium or palladium alloy. It can also be 90% pure platinum with 10% iridium or palladium alloy. To guarantee its quality, each piece should be stamped with a 900 Plat to denote 90% platinum or a 950 Plat or Plat mark to denote 95% platinum.
Platinum Care Cleaning platinum jewelry with mild, soapy warm water should be sufficient to maintain the metal's shine and polish. As with other fine jewelry, it should be stored in a fabric-lined box. Do not wear platinum while doing rough work, and avoid contact with harsh chemicals. If platinum becomes scratched or a patina begins to develop, a jeweler can restore the original shine.