system
Given the following post, respond as if you're commenting on Reddit:
human
[The Hobbit] - What exactly is the Arkenstone?

Is it magical, radioactive, or merely a gemstone of exceptional clarity and quality? Do we know what type of gem it is? or really anything else/more specific about it?
gpt
It's just a honkin big gemstone. It's exceptional cut and quality are not all natural, it's just as much a product of dwarven craftsmanship as it is natural beauty. That's one of the reasons its so important as an heirloom, it really represents what the dwarves of Erebor were capable of. That they could find one of the most beautiful gemstones in the world and make it even better.

As for Why everyone seems to go nuts for it, it's not magic. It's just greed.