Unit 1 AN INTRODUCTION TO GEM AND GEMOLOGY Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Business Nature & Products（Ⅰ）Unit 2 WHAT ARE SYNTHETIC DIAMONDS Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Products（Ⅱ）Unit 3 COLOR Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Products (Ⅲ)Unit 4 REFRACTIVE INDEX AND REFRACTOMETER Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Products (Ⅳ)Unit 5 PRODUCTION PROCESS AND TECHNOLOGY OF JEWELRY Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Products (Ⅴ)Unit 6 THE NOMENCLATURE OF JEWELRYS Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Introduction (Ⅰ)Unit 7 MAINLAND CHINA：A VAST MARKET FOR COLORED GEMSTONES Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Introduction (Ⅱ)Unit 8 GEMSTONE APPRAISALS AND GEMSTONE VALUE Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Introduction (Ⅲ)Unit 9 MAKE A FASHION STATEMENT WITH GEM-SET JEWELRYS Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Introduction (Ⅳ)Unit 10 HOW DOES NEW TECHNOLOGY BENEFIT THE DIAMOND AND JEWELRY INDUSTRY Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Introduction (Ⅴ)Unit 11 JEWELRY-MAKING TECHNIQUES OF ANCIENT GREEK Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Introduction (Ⅵ)Unit 12 THE HISTORY OF LAPIDARY Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Talking about products’ merits & benefitsUnit 13 BLACK & WHITE JEWELRY Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ Offering reference material on productsUnit 14 FIND OUT YOUR BIRTHSTONE Part Ⅰ Text Part Ⅱ Words and Expressions Part Ⅲ Reading Material Part Ⅳ After-sales serviceAppendix Appendix Ⅰ Gems Nomenclature Appendix Ⅱ VocabularyReference
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