Cape emerald Table of Contents Introduction References & Edit History Quizzes (Bed) Rocks and (Flint) Stones Related Questions What does Earth look like? Is mathematics a physical science? How is astronomy different from cosmology? Read Next How Do You Tell the Difference Between Total, Annular, Solar, and Lunar Eclipses? 9 Celestial Omens Why Are Planets Round? 9 Britannica Articles That Explain the Meaning of Life How Fast Is the Universe Expanding? Discover Secret Service Code Names of 11 U.S. Presidents 10 Greatest Baseball Players of All Time 11 Egyptian Gods and Goddesses What is the Difference Between Daoism and Confucianism? Why Do We Eat Turkey on Thanksgiving? Why Is It Called Black Friday? Was Santa Claus a Real Person? Contents Visual Arts Fashion & Personal Adornment Cape emerald mineral Ask the 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 the 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 the Chatbot a Question Related Topics: gemstone prehnite (Show more) Cape emerald, gem-quality prehnite (not emerald). See prehnite.