Cape emerald Table of Contents Introduction References & Edit History Quizzes (Bed) Rocks and (Flint) Stones Read Next Where Did the Moon Come From? What Is Earth’s Velocity? How Do You Tell the Difference Between Total, Annular, Solar, and Lunar Eclipses? 9 Celestial Omens Why Are Planets Round? Discover 7 of the World’s Deadliest Plants Timeline of the 1980s 14 Questions About Government in the United States Answered Ten Days That Vanished: The Switch to the Gregorian Calendar Acts of Union: Uniting the United Kingdom 6 Animal Species that Mate for Life How Deadly Is Quicksand? Contents Visual Arts Fashion & Personal Adornment Cape emerald mineral Ask Our Chatbot a Question More Actions Print Cite verifiedCite While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions. Select Citation Style MLA APA Chicago Manual of Style Copy Citation Share Share Share to social media Facebook X URL https://www.britannica.com/science/Cape-emerald Feedback Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article. External Websites Ask Our Chatbot a Question Written and fact-checked by The Editors of Encyclopaedia Britannica Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors. The Editors of Encyclopaedia Britannica Article History Table of Contents Table of Contents Ask Our Chatbot Related Topics: gemstone prehnite (Show more) Cape emerald, gem-quality prehnite (not emerald). See prehnite.