Tourmaline is a semi-precious gemstone and has an exceptionally wide range of colors including colorless, black, greenish blue, bluish green, green, blue, red, and violet. The most sought-after tourmaline color is the pink/red variety and is also known as rubellite. It is composed of crystalline boron silicate compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. It’s hardness and durability make it very well suited for jewelry.
