Natural Chalcedony which contains the element Chromium displays a special green color. GIA wrote about Chrome Chalcedony in July, 2005, as follows: "Chrome chalcedony is rare, intensely green, and, as its name implies, colored by chromium. It sometimes contains tiny black Chromite crystals, which help distinguish it from dyed green chalcedony. Its slightly higher SG (usually around 2.60, but sometimes above 2.62) might also help separate it from dyed green chalcedony. Chrome chalcedony’s spectrum has a vague band around 645 nanometers (nm) and a distinct line at 684 nm. The spectrum for dyed green chalcedony has a similar appearance. Also, both materials can look pinkish or reddish through a color filter. Chrome chalcedony resembles green jadeite, but jadeite’s RI and SG are both much higher." There is also a bit of historical significance with the stone as well, which you can read about here. The production of fine quality Chrome Chalcedony rough from Australia has been sporadic. We are pleased to have purchased some beautiful new rough. As cabochons are produced, we will offer the best stones
to our customers. | 
