The “Pink sapphire or ruby” question is moderately easily answered.
Put simply, if the material shows chromium absorption lines in a
spectrograph then you can describe it as ruby. Otherwise it’s pink
sapphire.
Tony Konrath
The “Pink sapphire or ruby” question is moderately easily answered.
Put simply, if the material shows chromium absorption lines in a
spectrograph then you can describe it as ruby. Otherwise it’s pink
sapphire.
Tony Konrath