White porcelain: oven, microwave and dishwasher safe although a gentle hand wash will make your porcelain last longer.
Porcelain with gold luster is unsuitable for microwave and hand wash is recommended.
Porcelain is highly resistant and tends to last much better over the years than standard ceramic. That's because porcelain is denser, more uniform and harder than ceramics. It is fired to higher temperature, and this gives stregth and make it more durable, most crack-resistant, almost impossible to stain, and with no absorption problems therefore completely food safe.