Most commonly, tulipwood is the pinkish yellowish wood yielded from the tuliptree, found on the Eastern side of North America and also in some parts of China. In the United States, it is commonly known as tulip poplar or yellow poplar, even though the tree is not related to the poplars. In fact, the reference to poplar is a result of the tree's height, which can exceed 100 feet. This pen is set in 24kt gold hardware.