Block of Diamond

Blocks of Diamond (also known as Diamond Blocks) are decorative mineral blocks that do not appear in normally generated maps. They currently serve no crafting purpose, functioning instead as a decorative block and as a means of storing diamonds in a compact fashion. They use the same texture on all six sides. The Block of Diamond is one of the more difficult items to acquire in-game, seeing as it is comprised of diamonds which are themselves a rare and non-renewable resource.

Usage
The pyramid required to activate a beacon can be made partially or entirely out of diamond blocks.

Trivia

 * One block of diamond and one wooden log is exactly enough to create a 80% set of diamond tools with one or no sticks left over, depending on if you use a sword or a hoe.

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