Spinel - PL spectra


Color shift bluish-violet to violet spinel – 3.65 ct – Unknown locality


pl405  spinel 365  bluish-violet-to-violet color-shift  UnknownLocality

Blue spinel – 1.10 ct – Sri Lanka


pl405+442+532  spinel(FeCo) 110  blue  SriLanka

Grayish-blue spinel – 4.01 ct – Verneuil Man-made


pl405  spinelCo 401  grayish-blue  Verneuil Man-made

Grayish-blue spinel - 3.56 ct rough - Kalu River, Rathnapura, Sri Lanka


No luminescence with 405 and 635 nm sources.

Light-greenish-yellow spinel – Boule – Verneuil Man-made, Bitterfeld, Germany


pl405  spinel boule  light-greenish-yellow  Verneuil Bitterfeld Germany

Red spinel – 1.57 ct crystal – Flux-grown Man-made, Russia


pl405  spinel 157C  red  Flux-grown Man-made Russia

Red spinel – 2.51 ct crystal – Myanmar


pl405  spinel 251C  red  Myanmar
The Cr3+ emission pattern of unheated natural spinel. The 740 nm emission is to be looked into.

Strong 'glowing' pink spinel – 0.34 ct – Mogok, Myanmar


pl405  spinel 034  pink  Mogok Burma

Pink spinel – 0.84 ct – Kukh-i-Lal mine, Pamir Mts, Tajikistan


pl405  spinel 084  pink  Kuk-i-Lal Mine Pamir Tajikistan
The Cr3+ emission pattern of unheated natural spinel.

Near colorless spinel – 1.99 ct – Myanmar


pl405  spinel 199  near-colorless  Myanmar

Gray spinel – 1.44 ct – Mogok, Myanmar


pl405  spinel 144  gray  Mogok Myanmar

Black spinel - 3.09 ct - Thailand


No spectrum