This unusual work is a complete treatise on the identification of
precious stones that is thoroughly recommended for inclusion on the
jeweller or antiquarian's bookshelf. Contents Include: Preface; How
to Use The Book; Refractive Index and its Measurement; Double
Refraction and How to Detect it; Colour, Colour Filters and the
Dichroscope; Specific Gravity and How to Measure It; Detection of
Synthetic and Imitation Stones; The Use of the Microscope; The
Identification of Diamond; The Identification of Ruby; The
Identification of Sapphire; The Identification of Emerald;
Aquamarine and Alexandrite; The Identification of Zircon; The
Identification of Topaz; The Identification of Pink, Mauve, etc.
Stones; The Identification of Brown and Orange Stones; Quartz,
Opal, and Garnets; Tourmaline, Peridot, and Spinel; Identification
of Translucent and Opaque Stones; Amber, Tortoiseshell, Coral, and
Jet; Pearls: Real, Cultured, and Imitation; Appendix: Glossary,
Alphabetical Summary of Gem Species, Crystal Systems, Bibliography,
Specific Gravity and Refractive Index Tables; Names and Addresses
of Recommended Suppliers; and an Index. Many of the earliest books,
particularly those dating back to the 1900s and before, are now
extremely scarce and increasingly expensive. We are republishing
these classic works in affordable, high quality, modern editions,
using the original text and artwork.
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