Church (A. H.). Precious und curious stones. [In Spectator, July 9, 1870.]
------. Townsend Collection. [In Quart. Jour. Science,
Jan., 1871.]
.—-. Precious stones. London, 1882.
------. Discrimination, etc., of precious stones. [In Jour.
Soc. Arts., xxix., p. 439.]
.------Physical properties of precious stones. [In Proc.
Geol. Assoc, v., No. 7.]
------. Colours of precious stones. [In Magazine of Art.,
i., p. 33.]
Claremont (Leopold). Precious stones. Philadelphia and London. J. B. Lippincott Company, 1903. 224 pp., xix. plates. 8°.
------. The gem-cutter's craft. London. G. Bell and
Sons, 1906. xv., (1), 296 pp. Illustrations. Plates. Tables. 8°.
Clauder (G). Schediasma de tinctura universali, vulgo lapis philosophorum dicta, etc. Norimbergae
(Nuremberg) , 1736. An alchemical treatise containing 13 folding
tables having a list of minerals with their properties grouped under
the following heads: No-men, Substantia, Color, Pondus, Natura,
Prseparatio, Tractatio, Contenta.
Clave (Estienne). Paradoxes, ou Traitiez Philosophiques des Pierres et Pierreries, contre l'opinion volgaire. Paris, 1635.
Clutius (Augerius). Calsvee, sive Dissertatio Lapidis Nephritici, seu jaspidis viridis, naturam, proprietates, et operationes exhibens Belgice. [Amsterdam, 1621, et Lat. per Gui. Lauremberg, fil.] Rostochii (Rostock), 1627.
Cohen (E.). lieber Capdiamanten. [In Neues Jahrbuch, i., p. 184, 1881.]
Cohen (M.). Beschreibendes Verzeichniss einer Sammlung von Diamanten. Wien (Vienna), 1822. CoLLlNl (COSMUS). Journal
d'un Voyage, qui contient différentes observations minéralogiques,
particulier-ment sur les agates, avec un détail sur la menière de
travailler les agates. Mannheim, 1776.