In this seed you will be able to discover and explore a mineshaft hidden deep underground. After some wandering you will come to some diamonds which you can mine.
Dig straight down where you spawn at and continue digging until you reach a mineshaft which you can enter. The mineshaft is quite small with not many options where to go so going lost isn't really an alternative.
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Walk straight into the mineshaft and then take the first right and then the first entrance to the left. This is the easiest way to get to the four diamonds. You will only see one diamond and some redstone. To find the rest you'll need to destroy some stones surrounding the first diamond ore block.
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Seed: 1430515808
It's because Minecraft seeds change when updates are released :) XD