Piece of wood pierced by the fire of molten glass blown to inside.The contact of the blushing glass which swells in the heart of the wood allows by conduction the impression of the glass in the tenderness of the wood.The precarious balance of this glass ball, stands by perfect interlocking with charred wood.The disappeared part of the wood gives way to opaline glass, like a ball of frost in contradiction with the black coal but which by the delicacy of this alliance create a perfect stability.