Turquoise The name means Turkish stone as this was the route into Europe. Pure blue color is very rare as most is interspersed with other elements or inter grown with malachite or chrysocolla. It is found in widespread deposits but the best quality is said to come from north east Iran. This gem is very easy to damage so is bets taken off when washing etc as this will effect the color. House hold chemicals such as cleaners and detergents should be avoided.It has a mohls hardness of 5-6 and a refractive index of 1.610-1.650. The Turquoise is a birthstone
of December considered to be the birthstone for Sagittarius and associated to those born in November.Must be a fake. Always buy from a reliable gemstone dealers.