What people are saying - Write a review
The section on the chemicals responsible for the color of amethyst is the smartest, critical thinking I encountered after reading 20 previous search results, including more recent information and including university, government, and Wikipedia websites. There is much disagreement and diversity about this subject and this writing made everything make sense.
Other editions - View all
A Handbook to a Collection of the Minerals of the British Islands: Mostly ...
F. W. Rudler
No preview available - 2016