Gemstones and their distinctive Characters
By Frederik Herbert Smith
Length8h 18m
About this audiobook
Excerpt: "It has been my endeavour to provide in this book a concise, yet sufficiently complete, account of the physical characters of the mineral species which find service in jewellery, and of the methods available for determining their principal physical constants to enable a reader, even if previously unacquainted with the subject, to have at hand all the information requisite for the sure identification of any cut stone which may be met with. For several reasons I have dealt somewhat more fully with the branches of science closely connected with the properties of crystallised matter than has been customary hitherto in even the most comprehensive books on precious stones. Recent years have witnessed many changes in the jewellery world. Gem-stones are no longer entirely drawn from a few well-marked mineral species, which are, on the whole, easily distinguishable from one another, and it becomes increasingly difficult for even the most experienced eye to recognise a cut stone with unerring certainty. So long as the only confusion lay between precious stones and paste imitations an ordinary file was the solitary piece of apparatus required by the jeweller, but now recourse must be had to more discriminative tests, such as the refractive index or the specific gravity, the determination of which calls for a little knowledge and skill. Concurrently, a keener interest is being taken in the scientific aspect of gem-stones by the public at large, who are attracted to them mainly by aesthetic considerations."
Audiobook details
GenreOther
Length8 hrs 18 mins
Narrated byListen with 1,000+ voices
FormateBook with Audio
Publish dateMar 6, 2020
LanguageEnglish
Table of contents
1Gemstones
27CHAPTER XXVI
2CHAPTER I
28CHAPTER XXVII
3CHAPTER II
29CHAPTER XXVIII
4CHAPTER III
30CHAPTER XXIX
5CHAPTER IV
31CHAPTER XXX
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6CHAPTER V
32CHAPTER XXXI
7CHAPTER VI
33CHAPTER XXXII
8CHAPTER VII
34CHAPTER XXXIII
9CHAPTER VIII
35CHAPTER XXXIV
10CHAPTER IX
36CHAPTER XXXV
11CHAPTER X
37CHAPTER XXXVI
12CHAPTER XI
38CHAPTER XXXVII
13CHAPTER XII
39CHAPTER XXXVIII
14CHAPTER XIII
40CHAPTER XXXIX
15CHAPTER XIV
41CHAPTER XL
16CHAPTER XV
42TABLE I
17CHAPTER XVI
43TABLE II
18CHAPTER XVII
44TABLE III
19CHAPTER XVIII
45TABLE IV
20CHAPTER XIX
46TABLE V
21CHAPTER XX
47TABLE VI
22CHAPTER XXI
48TABLE VII
23CHAPTER XXII
49TABLE VIII
24CHAPTER XXIII
50TABLE IX.—Data
25CHAPTER XXIV
51FOOTNOTES:
26CHAPTER XXV
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