Gemitech – Thermochromic behavior – Chameleon Diamonds

Chameleon diamonds typically change color from grayish-green to yellow when they are heated (thermochromic behavior) or kept in the dark (photochromic behavior). Those diamonds are type Ia with A aggregates largely dominating the nitrogen speciation. They contain moderate to high amounts of hydrogen, in addition to some isolated nitrogen and traces of nickel. Temperature seen here in the background is in Celsius degrees (ref. E. Fritsch, L. Massi, GR Rossman, T. Hainschwang, S. Jobic, R. Dessapt (2007) Thermochromic and photochromic behavior of “chameleon” diamonds, Diamond & Related Materials 16 (2007) 401–408).

Tags: diamond color, diamond gems, diamonds