Quantcast

Sec. IV, Ch. 11: Semi-Precious Stones, Chrysoprase

Sec. IV, Ch. 11: Semi-Precious Stones, Chrysoprase Page of 366 Sec. IV, Ch. 12: Semi-Precious Stones, Crocidolite Text size:minus plus Restore normal size   Mail page  Print this page
256
Chrysoprase.
and that the stone contained a small quantity of water. The nickel oxide is therefore, probably united with water, as hydrate, in the Chrysoprase, and if by the influence of heat, some of the water in the stone is lost, the beauty of the colour may be more or less destroyed.
At Oberstein a green colour is imparted to ordinary Chalcedony, by means of salts of nickel or of chromic acid so as to produce an artificially tinted Chrysoprase.
CHRYSOPRASE.
Sec. IV, Ch. 11: Semi-Precious Stones, Chrysoprase Page of 366 Sec. IV, Ch. 12: Semi-Precious Stones, Crocidolite
Table Of Contents bullet Annotate/ Highlight
Streeter: Precious Stones and Gems
Suggested Illustrations
Other Chapters you may find useful
Other Books on this topic
bullet Tag
This Page