Osmium tetroxide production I know osmium powder will produce osmium tetroxide when exposed to air,but what about solid piece of osmium,such as pellet or ring,finely polished to minimize surface area,will this produce significant tetroxide at 24 degrees celsius air?

How much tetroxide will 1 cm2 surface area of polished osmium produce in 24 hours when exposed to air at 24 celsius?
A block of Osmium is quite immune to atmospheric attack, due to the low surface area of the osmium, but when heated it can form Osmium tetroxide. I wouldn't like to risk wearing an osmium ring just incase Osmium tetroxide is formed. The oxide has a pungent smell so if you do wear a ring of Osmium, at least you'll have some form of warning to take it off. So really, I wouldn't recommend it, but do it at your own risk.