Is there a absorption spectrum chart for the most common gems to get somewhere?
Yes I just purchased this book used for 27.00 USD. It has all the gem ID information including a picture or the absorption spectrum.
Gem Reference Guide for the Gia colored stones, gem identification and colored stone grading course.
Thx I will look and see if I can find it
After lots of reading I found this web page.
On the left column there is loads
Do you have a link where this can be found for the price you paid? Amazon is crazy.