You can find them online (they don't sell them in stores anymore). Usually you will find them at ebay.com, xmodsinternational.com, or atomicmods.com
All kinds of different unique crystals. (:
near the surface of the earth
You can find crystals, meaning rocks and minerals in their natural crystal form (they grow that way), almost anywhere in nature - both on the ground and under the ground. Most crystals are mined, since many have formed millions of years ago. Check out rockhounding sites if you want to mine your own, but the easiest way to find crystals is to go to a rock shop or metaphysical store in your area. You can find them on line, but it is not the same as actually touching them in order to get to know what you are looking at. See also the link below.
in a cave
Crystals
XMODS was created in 2003.
i think radioshack removed xmods website, but you can still buy xmods parts at Atomicmods.com or Xmodsinternational.com
ALL OF THEM.
In a nutshell, yes. They are returning as "Xmods Street"
Xmods for video games can be difficult to come by, as they require customization of either physical components of a game system or of the game code itself. Most Xmods can be found by visiting online gamer forums, but these are technically illegal modifications to copyrighted hardware and/or software. Proceed with caution.
no, Sorry.
eBay.
u can normally buy them at radioshak
All kinds of different unique crystals. (:
In your sugar bowl, are crystals of sugar, an organic material. In your salt shaker you'll find (roughly) cubic crystals of salt.
Any, Xmods are fun out of the box and can be competitive with a few aftermarket upgrades
Shiny Crystals are dropped by Wizards.