Gemologist was a big fan of using a point and shoot with a set of Raynox for his gem photos (some in his Gallery I believe). Th reasoning was that the smaller sensors allowed far greater depth of field. Seein as you already have the FZ35, I would hesitate making the small investment in the Raynox. The worst thing that happens is that you maybe find they work better on one of your other lenses. I know you want to force yourself to using a DSLR, but in the end it's all about using the right tool for the job.
The Raynox are a bit more than I want to spend right now. I'm not doing this professionally so I'm trying to keep the costs down.
I bought a reversing adapter, some extension tubes and a rail system - just waiting for delivery now. My camera has a 2:1 ratio so the sensor is smaller than most dslrs. My old Kodak had a super-macro mode that I truly miss!
Where is Gemologist lately? -- "While you can teach an old dog new tricks, you simply can't teach him to be a cat."