Abstract
THE second edition of this useful work contains much new material, and is even more fully illustrated than the first. The work is divided, as before, into three parts—the first dealing briefly with the general properties of minerals, the second being concerned with descriptions of the individual gem species, and the third part containing tables of physical properties, etc., conveniently arranged for reference. A good index is provided.
Gems and Gem Materials.
By prof. Edward Henry Kraus Dr. Edward Fuller Holden. Second edition. Pp. ix + 260. (New York: McGraw-Hill Book Co., Inc.; London: McGraw-Hill Publishing Co., Ltd., 1931.) 18s. net.
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A., B. Gems and Gem Materials . Nature 130, 419 (1932). https://doi.org/10.1038/130419c0
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DOI: https://doi.org/10.1038/130419c0