It is simple to but jewelery from e - bay, however you must be cautious of fake jewels if you are after genuine jewelery.
The first thing to remember is that anything that is gold tone, silver tone, copper tone or costume jewelery should be avoided, as these will lose the colour of the tone as it is non genuine.
Another thing to keep in mind is that semi precious stones can not only be seen from the front of the jewel, but can be seen from the underneath. For example, most glass reproduction rings are solid underneath the stone.
The fianl thing to remember are markings imprinted on the jewelery. Every type of genuine gold or silver has a number branded on it somewhere. It is advisable to cautious of a piece of jewelery if the markings and important details of the jewels are not shown.