NEWS An update on the latest additions or alterations to this site.
SPECTRA DATABASE Images and Descriptions of Absorption and Emission Spectra.
COLOUR FILTERS The application of colour filters in gem testing.
THROUGH MY SPECTROSCOPE Spectra of special interest presented and discussed
ABOUT THE AUTHOR John S. Harris Engraver and Gemmologist.
A GUIDE TO THE SPECTROSCOPE A Gemlab UK Production for Education in Gemmological Spectroscopy.
This CD contains an animated Microsoft PowerPoint Slide Show which can be controlled by the viewer.
For further information on contents and to order click the image
The Gemmological Association of Great Britain www.gem-a.com
The Scottish Gemmological Association www.scottishgemmology.org
Optical Spectroscopy Software by Dr. F. Menges www.spectroscopy.ninja
Unique Original Jewellery by Richard Harris www.cumbrian.com
DECLARATION OF COPYRIGHT
The images and text shown on this web site are the sole intellectual property of John S. Harris. and may not be copied, transmitted, or used in any way without permission.
Permission may be granted for non-commercial use in education and research in which case please
apply to John Harris at email@example.com
Copyright John S. Harris - from the year 2000 to the current date.