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The Hattusa Green Stone is a roughly cubic block of nephrite standing in the remains of the Great Temple at Hattusa, capital of the Hittites in the late Bronze Age. Now on the hill above Boğazkale, in the Turkish Province of Çorum, Hattusa is a World Heritage Site.
The original purpose of the stone is unknown, but it is a tourist attraction, as it has a magical reputation for granting wishes.