Aruba Lapis Lazuli Diamond White Gold Engagement Ring 2015 Fashion.
By Farzana Aamir
Color
The intense blue color is due to the presence of the S3− radical anion in the crystal.[11] An electronic excitation of one electron from the highest doubly filled molecular orbital (No. 24) into the lowest singly occupied orbital (No. 25)[12] results in a very intense absorption line at λmax ~617 nm.
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