A thoughtfully curated collection of classic articles dating from the early 1900s and before. Selected for their lasting relevance and clarity, the writings explore how gemstones are classified and identified, what distinguishes precious from semi‑precious stones, and the defining physical and optical properties that make each gem unique.Contents include: Precious Stones and Gems: Their History, Sources and Characteristics by Edwin W. Streeter The Engraved Gems of Classical Times by J. Henry Middleton Diamonds and Precious Stones: Their History, Value and Distinguishing Characteristics by Harry Emanuel Jewellery, Gem Cutting and Metalcraft by William T. Baxter Precious Stones: Considered in Their Scientific and Artistic Relations by A. H. Church The Chemistry, Properties and Test of Precious Stones by John Mastin Including original expert material on topics such as crystal symmetry and gemstone characteristics, The Classification, Identification and Characteristics of Gemstones delivers a comprehensive, historically grounded guide for anyone eager to understand the science behind gemstone varieties--perfect for collectors, enthusiasts, and budding gemologists alike.