If I remember correctly your sim will die if you keep tiberium in their inventory for too long. And since you're lucky enough to have tiberium in the first place, I suggest starting a tiberium farm. Keep the piece you got and eventually it will expand (I think) and make more tiberium. Wait for the new pieces to expand and you've got an easy 30 000 Simoleons there.
Is this a new way to die?
What is tiberium anyway?
So, I cut my tiberium gem into the only cut I could cut it into: spire. After that, I placed it in my house. It glows and spits out stuff every now and then, but it seems harmless. It is growing though. It was worth 7 thousand something when I got it cut, and now it's worth 40 thousand something.
Edit: It's now called a Large Spire Cut Tiberium.
I wish they add tiberium poisning death eventually... maybe it culd be ane easter egg for an aliens ep.
*lol aliens as in aliens, not aliens as in facehuggers,chestbursters and the lot, sigourney weaver and all*
There's another bug (unless they've fixed it, I haven't checked with the new patch/expansion yet) that makes any cut gem and smelted metal lose value when you travel with it (or export and import it) so if you take a 40,000 value large spire cut Tiberium to a different location with you it'll end up worth around 100 (items change to the value of their raw form).