This rare 26.04-ct. color-change diaspore from Anatolia, Turkey, has
found a new home at the Gemological Institute of America. Guven Cankur of
Color Change Empire, owner of the mine where the diaspore was found, donated
the gem under GIA's Treasured Gifts program. Turkish diaspore exhibits dramatic
color changes, from brownish green to green in daylight to rich champagne
(shown here). Other diaspores can change to more reddish tones. Diaspore
registers 6.5-7 on the Mohs hardness scale and has a refractive index of
1.702-1.750 and specific gravity of 3.39. These characteristics make it
an excellent candidate for mounting in jewelry. But its greatest selling
features are the color change, durability, scintillation and color saturation.
Color Change Empire Inc., New York City; (212) 533-5676.
This rare 26.04-ct. color-change diaspore from Anatolia, Turkey, has
found a new home at the Gemological Institute of America. Guven Cankur of
Color Change Empire, owner of the mine where the diaspore was found, donated
the gem under GIA's Treasured Gifts program. Turkish diaspore exhibits dramatic
color changes, from brownish green to green in daylight to rich champagne
(shown here). Other diaspores can change to more reddish tones. Diaspore
registers 6.5-7 on the Mohs hardness scale and has a refractive index of
1.702-1.750 and specific gravity of 3.39. These characteristics make it
an excellent candidate for mounting in jewelry. But its greatest selling
features are the color change, durability, scintillation and color saturation.
Color Change Empire Inc., New York City; (212) 533-5676.