Once, I saw diamonds, saw that I had an iron pick, and mined the first 2 pieces I saw, then I saw the other 2, then I decided to make a diamond pick of epicness and then made my roof out of obsidian. Unfortunately, my SSP world was lost due to me falling into a flowing lava pool and dieng, thus losing my pick, obsidian, jukebox, and all the other content in my world. I have a memory world too. Even a memory place on another online game. One diamond is worth like 64 gold ingots and 1 gold is worth 4 iron.