Tourmaline & Opal
Tourmaline comes in many colours! It has a complex chemical structure.
Some important tourmaline varieties are Paraiba Tourmaline (neon blue), Rubelite Tourmaline (hot pink to red colour), Watermelon Tourmaline (green and pink parti-color), etc.
Opal is a gemstone that displays a special phenomena. It is called play of colour . Some of the sources of opals are Australia, Ethiopia and Indonesia.
