In French folklore, the Vouivre was a dragon with one eye. The eye was actually a blood red carbuncle stone. Its scales were known to sparkle like diamonds and it wore a crown of pearls. It hoarded treasure and had a habit of spreading the treasure out on Palm Sunday to admire its collection. This treasure was usually found under rocks and was accessible to humans once a year. This was an excellent way to capture treasure-seekers and the occasional child. It was considered the French counterpart to the English Wyvern. Its name is derived from "viper".