jargon Directory References Discover 12 Novels Considered the “Greatest Book Ever Written” Why Is a Baker’s Dozen 13? Falling Stars: 10 of the Most Famous Endangered Species 7 Deadliest Weapons in History 10 Inventions That Changed Your World 9 of the World’s Deadliest Snakes 10 Greatest Baseball Players of All Time Contents Ask Our Chatbot a Question jargon gem Ask Our Chatbot a Question Learn about this topic in these articles:description In zirconThe name jargon, like zircon derived from Persian zargūn, applies to all other colours. A lovely blue stone may be made by heat treatment under reducing conditions.Read More Britannica ChatbotChatbot answers are created from Britannica articles using AI. This is a beta feature. AI answers may contain errors. Please verify important information using Britannica articles. About Britannica AI.