 | Sunset Ruby is a name given to a sapphire that is too orange to be ruby and lacking the pinks to make it a Padparadscha. Breathlessly marketed ... "The Cambodian 'sunset' ruby is 50 times more rare than a diamond and is a tribute to the beauty of a Cambodian sunset" the stone was featured on the TV series "Game of Stones" |  |
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The "sunset ruby" is marketing rubbish ... it is corundum that is diffusion treated with trace elements (likely beryllium). Beryllium treatment is routinely detected with spectrometers. |  |
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