Is it against God to have any kind of crystals?

God created them, why would there be a problem with owning them for their beauty. It's how man uses them and what he attributes to them that is the problem. I really like stones and rocks and have polished many, I to have Amethyst Quartz still attached to their geode rock among many other crystals of quartz. If I'm not mistaken, there are many different kinds of stones mentioned in the Scriptures that God told the Israelites to use when making Aron's Priestly wardrobe. 12 stones on the Ephod, Exodus 28:17-21. God also describes the foundation of heaven using different stones.