Register (via mindat.org)
Hide Reference Spectrum:
Flip X axis:
Show Light Source:
Simulate Ideal Light Source:
Spectrum is calculated from data and may be exaggerated to emphasise peaks and absorption bands.
Copyright © Jolyon & Katya Ralph 1993-2023.
. Photographs are copyright of the individuals who submitted them.
For more information please contact the
Gemdat.org is an online information resource dedicated to providing free gemmological information to all.