jargon Directory References Discover Nostradamus and His Prophecies All 81 References in Fall Out Boy’s “We Didn’t Start the Fire,” Explained Why Is the Mona Lisa So Famous? 9 of the World’s Deadliest Spiders Flags That Look Alike Why Do Jeans Have That Tiny Pocket? 9 American Political Scandals Contents Ask the Chatbot a Question jargon gem Ask the 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.