|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"
|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.