African Turquoise - This stone is actually a natural jasper found in Africa. It has a matrix structure similar to that of turquoise, and is a light bluish-green with teal hues. The matrix has dark brown to black spots throughout the bead. It is an interesting substitute for a true turquoise and is believed by some to help in the relief of headaches. Black turquoise - is actually naturally occurring Onyx whose markings can resemble that seen on natural turquoise. Chinese Turquoise - is mined and processed in the Hubei province in China. Most of this turquoise is enhanced with wax treatment, restabilization or dyed.

Simulated Turquoise - Also known as 'Block'. To make this type of turquoise, plastic resin and dyes are mixed and then shaped into blocks of "turquoise" There's no actual turquoise gem stones in this mix, it is entirely man made, and can be found in a wide variety of colors.

White Turquoise -is actually a rock consisting primarily of quartz, calcite and alunite with only a very slight trace of turquoise.

Yellow Turquoise - is a jasper or serpentine that is yellow with brown, green and red within. The black webbing that appears throughout this stone is hematite.