Book description
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.
