A fascinating collection of historical gemology articles that takes readers back to the early 20th century to explore classic colourtesting techniques.Carefully curated from original sources, this compact volume explains the use of tools like the dichroscope, colour filters, lenses and other optical methods to understand and evaluate gemstone colour.Contents includeColour, Colour Filters and ThedichroscopeDichroism and the DichroscopeColour of GemstonesGemstonesGems and Gem MaterialsColour in Gem DistinctionSynthetic GemsColourColour, Dichroism, and AbsorptionspectraPerfect for gem enthusiasts, students and collectors interested in both the science and history of gem testing, Testing the Colour of Gemstones brings timeless insights into how gemologists studied colour before modern instrumentation.

Binding: Paperback;68 pages; Publisher: Read Books; Classification: N/A; Weight: 218.88 g; Dimensions: N/A

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