Both white gold and platinum are precious metals used for jewellery, but there are some important differences between them. White gold is actually an alloy of gold mixed with other metals such as silver, copper and nickel to give it a white colour. White gold is softer and lighter than platinum and is more prone to scratches and loss of lustre. Platinum, on the other hand, is a rarer and harder metal than gold. It is harder and more resistant to scratches than white gold and has a brighter natural lustre. Platinum is also more resistant to fading and loss of lustre over time. In summary, both white gold and platinum are good choices for jewellery, but platinum is generally considered more durable and resistant than white gold.