we all know that anything radioactive is dangerious for health?
It is all a matter of dose. We all receive several mSv a year from natural sources, exact number changes depending on where you live (and/or how often you are high above sea level - frequent flyers get substantially higher doses). Compare
http://xkcd.com/radiation/Small samples of uranium ore don't pose a risk, especially if they are left undisturbed and in some kind of a box (even closed glass jar will do - ore emits mostly alpha and beta and these are easily stopped). Dust can be dangerous if swallowed or breathed, but as long as the sample is in a form of solid rock that shouldn't be a problem. Using gloves to handle the sample won't hurt, washing hands afterwards is a must.
Also note that depleted uranium has many civilian applications (mostly based on its high density), and it is considered a safe material for these applications (given proper precautions are taken).