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Scientists have verified that a large gold nugget is actually a gigantic single crystal, the largest known.
Gold found in the ground will generally have a polycrystalline structure, meaning it is made up of many crystallites, varying in shape and size. Gold of a mono-crystalline structure, where the material is unbroken, are rarer and of significantly higher value.
The nugget is now worth about 100 times more than its typical weight in gold.