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For a complete novice like me this little book was extremely informative and beautifully illustrated. Offering tips on evaluation, gem treatment, fake and lab-grown gems and lots more. It gives a rundown on the factors that affect the price of coloured gemstones. At the end of the book is a section on IDENTIFICATION TABLES and Birthstones, giving information on Moh's Hardness of untreated gems mentioned in the book, hardness is a material's resistance to scratching and abasions.REFRACTIVE Index the degree to which light is bent as it passes through the stone.It ends with a list of birthstones which informs the reader were established by the American National Retail Jewelers' Assocation in 1912.
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