YESSSS scanning is AWESOME for jewelry. I suppose that seems counter-intuitive. It gives a slightly scientific/specimine look... Its a great way to avoid pidgeonhole-ing your aesthetic with a more thematic background. But it also depends on your scanner, I guess. Im lucky my school has awesome scanners, so they capture a lot of detail: http://ny-image1.etsy.com/il_fullxfull.208553769.jpg http://homemade-speed.com/necklace/rib2big.jpg
my parents have one that is not as great, but still does the job. The lack of specific context means that scans are great for a more professional portfolio as well as a stylized online fashion shop thing, which is good to have.
your stuff would also look killer photographed with some crystals/geode type objects.
those necklaces with the skulls and chain hair/veil are to die for