Corundum - IR Reflectance spectra


Blue sapphire – 0.40 ct – Auvergne, France


irs  sapphire 040  blue  Auvergne France

Blue sapphire - 0.04 ct crystal - Sioulot, Puy De Dôme, Auvergne, France


Not available

Light-blue sapphire – 5.06 ct rough – Guroji, Mambilla, Taraba, Nigeria


irs  sapphire 506B  light-blue  Guroji Mambilla Tsara Nigeria

Unheated bluish-purple sapphire – 0.49 ct – Ranotsara, Madagascar


irs  sapphire 049  bluish-purple  Ranotsar Madagascar

Violetish-blue sapphire – 0.84 ct – Likely synthetic


irs  sapphire 084  violetish-blue

Sapphires from Graves Hill, Queensland, Australia


Not available

Green sapphire – 0.18 ct – Puy De Dôme, Auvergne, France


irs  sapphire 018  green  PuyDeDome Auvergne France

Pinkish-red ruby – 0.40 ct – Montepuez, Niassa, Republic Of Mozambique


irs  ruby 040  pinkish-red  Montepuez Niassa RepublicOfMozambique

Unheated red ruby – 0.71 ct – Andilamena, Madagascar


irs  ruby 071  red  unheated  Andilamena Madagascar

Red ruby – Verneuil Man-made


irs  ruby -  red  Verneuil Man-made

Pinkish-red ruby - 2.70 ct - Glass-filled treated


Not available

Pinkish-red ruby – 1.10 ct – Tajikistan


irs  ruby 110  pinkish-red  Tajikistan