Peruvian Chrysocolla 8mm Round - 15-16 Inch featured_08152024 and the green color is

and the green color is caused by a reaction in the stone when the chrome is introduced to water

and over time

Blue Apatite ranges in color from light teal to blue to bright blue to dark blue to green

discovered a way to improve the quality of turquoise in the 1980's

All wood beads on DakotaStones

Peruvian Chrysocolla 8mm Round - 15-16 Inch featured_08152024 and the green color isChrysocolla, a hydrous copper silicate, is often mistaken for turquoise due to its rich blues and blue to greens. It often also occurs with colors of rust, copper, black, white and reddish brown in speckles, veins and brecciated patterns. It is a very soft stone typically found near copper deposits. Chrysocolla was first described by Theosphrastus, a Greek philosopher and botanist who also named the stone, in 315 BCE.