Tourmaline is available in a range of colours: green, red, yellow, pink and blue. There is a ‘watermelon tourmaline’, which is a bi-coloured stone whereby a stone is pink inside and green outside. Most tourmalines are known in their colour form; pink tourmaline, yellow tourmaline and so on. Red tourmaline is know as rubellite; pinkish red to ruby red in colour and is one of the more valuable forms of tourmaline along with paraiba tourmaline which is neon green in colour. Tourmaline has a hardness of 7-7.5 on the Mohs scale. We have a range of beautiful rubellite rings, pendants and rubellite earrings in yellow 9ct gold.