Shub – Grandma Lyuba! (2000)

Voldya Sidorov, a high school student, is visited by his beloved grandfather, Yegor Kuzmich, who arrives from Nadym and brings a crystal the size of a baby’s head as a gift. The grandson and grandfather take the crystal to a pawn shop and ask for three hundred. And they’re offered three hundred... thousand dollars. The crystal turned out to be an uncut diamond...