ry complete account of all published finds of
precious stones in the United States, Canada, and Mexico, giving a
popular description of their value, history, archeology, and of the
collections in which they exist, also a chapter on pearls and on
remarkable foreign gems owned in the United States. Many rare and little
known semi-precious stones are described here. Dr. Kunz is also the
author of several more recent gem books notably _The Magic of Jewels and
Charms_ and _The Curious Lore of Precious Stones_, Lippincott, Phila.

Among books on engraved gems is the old _Hand Book of Gem Engraving_ by
C. W. King; Bell & Daldy, London, 1866, and one by Duffield Osborne;
Henry Holt & Co., N. Y. Another book on this subject is _Engraved Gems_
by Maxwell Somerville; Drexel Biddle, Phila.

For those who wish still further references the following older works
will prove interesting.

_Precious Stones_, by W. R. Cattelle; Lippincott, Phila. _Precious
Stones_, by W. Goodchild; D. Van Nostrand & Co., N. Y.

Julius Wodiska, of New York, has also written an interesting work on
precious stones, _A Book of Precious Stones_, Putnam's, 1907.

Still older works are _Precious Stones and Gems_ by Edwin W. Streeter;
Chapman & Hall, London, 1877. This is a book of 264 pages with nine
illustrations. It contains much of value and was unsurpassed in its day.
Its first-hand accounts of numerous important, even celebrated diamonds
and other precious stones will always make it valuable to the student of
gems.

Another book by the same author is _The Great Diamonds of the World_;
Geo. Bell & Sons, London, 1882; 321 pages. Not illustrated. Its title
adequately describes its contents. It is an excellent work. The author
even traveled in India tracing the history of some of the famous
diamonds that he describes.

_Diamonds and Precious Stones_, by Louis Dieulafait published in its
English translation by Scribner, Armstrong & Co., N. Y., 1874, is
another old but interesting work. It has 292 pages and 126 engravings on
wood. It gives a fine account of diamond cutting as practiced at that
time. There is also an excellent history of the production of artificial
precious stones to that date.

_The Natural History of Precious Stones and of the Precious Metals_ by
C. W. King, M.A., Bell & Daldy, London, 1870, is rich in references to
classical literature.

One or two interesting monographs on precious stones have been written
and _The Tourmaline_, by