Is platinum white gold

No, it is not the same, as platinum and white gold are two very different metals. However, the biggest difference would be the price as platinum is more expensive than white gold. Platinum is a naturally white metal, is more durable and dense whereas white gold is not. White gold has a high maintenance cost also as it requires rhodium plating to keep it white. When it comes down to buying a platinum or white gold wedding ring, it all depends on your budget and what you can afford.