Platinum is the most rare and precious of all metals. As the heaviest of the precious metals, it’s also loved for its strength and hypoallergenic properties.Here are a few tips.
HOW TO BUY PLATINUM JEWELRY
Platinum jewelry made in the U.S. contains either 90% or 95% pure platinum. Platinum jewelry marked “IRIDPLAT” contains 90% platinum and 10% iridium. When marked “PLAT” an item is at least 95% platinum, with 5% ruthenium.