Leisure Hours Among the Gems
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Leisure Hours Among the Gems is by Augustus C. Hamlin. Chapter IV, headed Origin of the Diamond, says the origin of this precious stone has been a favorite study with man from the earliest times of its history. The text says Mr. Voysey, Geologist to the India Survey, observed the very marked telluric action in the diamond formations of India, and moreover that the process of crystallization took place there with wonderful rapidity.
The text says the theory that crystals are made up of an assemblage of minute parts or molecules, each having the same definite form, is owed to the learned Abbé Haüy. A list of valuations of the rose diamond has Robert de Berquen, in 1669, valuing the rose cut of 1 karat at 100 francs. The text says the earliest and best accounts of the mines of Golconda are to be found in the narrative of Tavernier, who visited them in the middle of the seventeenth century.
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Book facts
- Author
- Augustus C. Hamlin
- Pages
- 220
- Language
- English
- Genre
- Popular Science
- Formats
- PDF, EPUB, Read online