Download or read book The World of Opals written by Allan W. Eckert and published by John Wiley & Sons. This book was released on 1997-10-02 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Readers will find fascinating details about the discovery, whereabouts, and value of famous opals, from such classic specimens as the Burning of Troy Opal to the Bonanza Opal and other more recent discoveries. Finally, the book surveys today's major opal-producing areas and provides current information on opal occurrence worldwide. Punctuating the text are useful tables, extensive glossaries of opal types and opal-related terms, and beautiful photographs that capture the essence and mystery of this most exquisite stone.