Turquoise

This stone can be compared to nephrite because of its softness that makes it easier to cut and shape and because it’s an opaque stone. Turquoise gemstone is sky blue in color with a hint of green. The colors of turquoise generally come from the presence and quantity of iron and copper in it. It comprises aluminum copper sulphate and hydrated phosphate of copper and aluminum. These metals are responsible for the cloudy presence and malleability of the stone. Birthstone for the month of December.