this Glitch allows you to double gold, iron, diamond, wheat, lapis, redstone, coal, and emerald blocks. fill your inventory with items, make sure to keep 1 of each block you want to double in the inventory bar you always see. now stand infront of a chest and pause the game while opening the chest at the same time( this may take a few tries). when it works the chest will open and but you wont be seeing whats in it, throw down 1 block from each box in you access bar( do not pick it up yet) you will notice you are still holding the block and it threw one down, now break down the blocks your holding into ingots, coal, ect. then go pick up your new doubled blocks. with this you can duplicate several blocks at the same time. works on ps3.