Tourmaline Rare Green “Verdelite”, a natural untreated gemstone, not laboratory-created. Tourmaline is known for its beautiful range of colours, colours that traverse the entirety of the spectrum; some colours are more rare than others, e.g. Rubellite or red Tourmaline, Paraiba a super-bright blue, and certain shades of Verdelite, green Tourmaline. The above specimen is a rare example of superior green Tourmaline, distinctive and of a highly unusual depth and complexity of colour.