Does anyone know the name of this old computer game?

Question

About 10 years ago now, I used to play a game on our Windows 98 that took place in space, and I know that you were rewarded with things like jewelry that you could then view in your closet. I think there was also something involving diamonds?

It's been bothering me forever, please answer!

Answer 1

Crystal Cave?

Aha I don't think that's it..

Space Invaders?

Sorry ]: