[SmileBaker]

Hi ClearH2O
My picture above was taken with nikon D-200 with 105 Macro lenz and with Ring flash.. That was from my old boss's system.. Right now I'm using Olympus E-500
with 35 macro lens and without ringflash but using bright continuous light source (about 5000k color temperature) since I often take picture by myself during work, I need to have close range macro lens.. so I chose 35 macro lens. however, Olympus 500E body has no image stabilization.. it's hard to take picture without blurring..
If I have money, I will go towards nikon or cannon DSLR with above 10 mega pixels..
with twin flash and 105 macro.. there are lots of things to learn about taking good pictures.. I'm also learning.. I hope this helps..

P.s : If u want to get good results.. put your F stop as high as possible (above 14 is recommended) and exposure about 150 which is depends on your light source.. and use a good Tripods.. to make your crown's line angle more visible use 2 different light source.. about 45 degree each.. avoid reflection directly from the object.

Sorry for poor response