I thought I would work on a macro shot today. So I picked a piece of my wife's jewelry, and figured I could get some shots in a short period of time (I'm a bit rushed today since I'm refereeing in a hockey tournament). It turned out to be more difficult than I thought - finding a background, setting up some light that wouldn't cause too much reflection and wash-out, positioning the tripod/camera close to the subject, experimenting with different apertures, getting focus at a close distance from the subject ... I finally decided on a fairly large aperture which left the stone in focus vs trying to get the whole piece. (Oh - in this case, the jewelry is gold, with an amethyst stone).
(60mm f5.6 4sec ISO200)