A lightbox gives usable (i use this term loosely) images but lacks punch because of such even lighting.
If you're not looking for quality then okay this is passable. Otherwise it lacks highlights, has totally no feel and does not answer why anyone would want to purchase it.
A few months back a fellow member posted some pictures regarding Jewellery in either this sub-forum or in Abstract sub-forum. I and several others posted some comments there you might find helpful.