Particularly popular in Art Nouveau jewelry around the turn of the 20th century, moonstone was a favorite of French goldsmith Rene Lalique, who featured moonstones in many of his nature-inspired works. Around that same time, for Christmas of 1906, Ernst Ludwig, Grand Duke of Hesse, gave his wife Princess Eleonore a magnificent Russian tiara featuring garlands of moonstones and turquoise curled around a diamond base. She no doubt enjoyed it for many years until November 1937, when many members of the royal family died in an airplane crash. The tiara was aboard that flight, but because it was in a strongbox, it survived the crash and is housed in London’s Victoria and Albert Museum. While moonstone is now regaining popularity in jewelry, it has been used in other decorative ways for thousands of years. In modern-day Sri Lanka, important buildings often have large half-moon-shaped steps, historically referred to as “a moon stone.” This is a throwback to the ancient Sri Lankan tradition of tiling steps with moonstone mosaics at Buddhist temples, such as the Moonstone Temple in Anuradhapura. Built in 100 B.C., only the temple ruins remain, the moonstones long since stolen. Moonstones are considered sacred in India and are, therefore, displayed only on yellow cloth because yellow is considered to be a holy color.