The markings on a platinum ring indicate its purity; it will either be marked iridplat or plat. Iridplat means the ring is 90 percent platinum and 10 percent iridium, while the plat marking means the ring is at least 95 percent platinum. Platinum is a valuable and rare metal, making it a coveted choice for fine jewelry.What does 950 platinum mean?
950 Platinum. Pieces marked with a 950 purity are a blend of 95% platinum and 5% alloy metals (usually ruthenium , copper, cobalt, iridium, rhodium, or palladium).Is platinum jewelry pure?
Platinum is ideal for jewelry that's worn everyday because it shows little wear. It's also hypoallergenic and resists tarnish. Platinum jewelry is pure. In the United States platinum jewelry generally contains anywhere from 85 to 95 percent pure platinum.