I attempt to accurately represent and describe cut stones and rough
as to appearance, size, origin and fully disclose any known
treatments in its description. Because you view the images on a
different monitor with different settings, color is particularly fickle
to represent, but I do my best.
Ultratec - As they say, "The makers of the world's finest faceting equipment."
Tsavorite Buying Guide - An excellent article concerning the Holy Grail of
colored stones: Tsavorite Garnet, by Richard W, Hughes.
Minerales y Metales del Oriente - The operator of the legendary
Anahi Mine in Bolivia. This mine is the only producer of true gem quality
ametrine in the world. The only place to go shopping for ametrine rough!
Guide to Gemstone Values - This site gives a fairly clear way to see
the value of colored gemstones, and includes historical prices.