Back once again for advice = )

[fernandojesse.livejournal.com]

Helllooooooooo ladies! I have a predicament. My dad got me these "giant gems" today. (I dunno why...he just did) Anyways, I wanna do something with them but I can't think of anything! They're like those half marble thingys, and they're silvery and kinda colorful...metallic, sorta like an oil spill or something like that. Oh and they're about the size of if you put your thumb and index finger together to make a circle. (grr I wish my digital camera worked! hehe) Anyone have an idea on what I could do??