Not all crown costs are covered by dental insurance as they are expensive and usually exceed the limits set by dental insurance for particular treatment costs. Porcelain crowns cost a lot more than gold crowns , yeah that's true. Porcelain crowns can be made to look just like your natural tooth and they time and effort to make the perfect match for your own teeth. Only highly skilled dentists are able to do this job perfectly. Also, it takes a lot of time and effort to make the perfect match for your teeth. So dental porcelain crowns are expensive but the finished job may be worth all the trouble.