Copiapoa goldii is a rare cactus species native to the coastal desert regions of northern Chile. It typically grows as a solitary, globular plant, reaching up to 15 cm in height and 10 cm in diameter. The cactus has a distinct dark green to almost black skin, which helps it absorb heat in its native cold desert environment. The spines are long, thin, and needle-like, ranging from golden yellow to light brown, giving the plant its name. During the flowering season, Copiapoa goldii produces bright yellow flowers that contrast sharply with its dark body.