I don't want anyone to get ripped off, but after entense hunt for the past 48 hours, i've gathered over 600 pieces of rubbles and noticed things. My knowledge of course will always be to your benifit: When an item blows up and becomes rubble, that original image will continue to spawn for upwards of 1 hour. Each time spawns it has a chance to spawn garbage or original colored items and each interval is longer between spawns. So, what ever you THINK it is unique, THINK again. Firepits, if successfully turned into rubble, has a chance to respawn over and over for the beter part of the hour. Also the quantity may also increase as well. I won't say more on this subject but when it is over I will give you proof as to why. This goes all the way back to what Draconi originally said, rubbles behave like return home rares or "server births" once its taken, it will respawn, but they did something esle to it in that the respawned items has a radius meaning those with doom stealable artifacts (within 10-15 tiles).