Golden sea silk. Credit: POSTECH For centuries, a shimmering golden fabric known as sea silk was one of the world's most exclusive luxury materials, reserved for emperors, popes, and other powerful figures. Now, researchers in South Korea have successfully recreated this legendary fiber and uncovered the secret behind its remarkable color. A team led by Professor Dong Soo Hwang (Division of Environmental Science and Engineering / Division of interdisciplinary bioscience & bioengineering,