Jagex explained it using a wheel model aswell, but theirs was a little bit different for the rare drops. The normal wheel would have a huge number of slots. There would be one slot in say 4000 (.025%) which would grant you a spin on the rares wheel. For dusties this wheel would include Dragon Med, Dragon Left Half, Dragon Chain and maybe some others that I have forgotten. This wheel would also have multiple spots for the more common drops they wanted (so Dragon Med may have 2 slots, Dragon Left Half may have 2 slots, and the Dragon Chain would only have 1). This would ultimately produce a chance of .005% (or 1:20000) chance at getting a Dragon Chain. They also hinted that there may be more than two wheels. So the primary wheel would decide whether you get a common, semi-common, semi-rare or rare drop, then it would break it down further from there. The ring of wealth would shift the balance slightly between these divisions. So if the divisions were normally: 75% Common, 20% Semi-Common, 4.975% Semi-Rare and .025% Rare originally, They could be shifted to 74.95% Common, 19.95% Semi-Common, 4.97% Semi-Rare and .040% Rare. That doesn't seem like much of a change, but it is actually 60% more chance than without a ring of wealth that you will get to take a spin on the rare wheel. Everything I have said here is not 100% reliable. Most of it is based off a post that a J-Mod had made over a year ago and the latter paragraph is purely speculation. NOOB! dusties don't drop d meds!!!! @@@ You're good at explaining stuff though