DANIEL SMITH Watercolour - 15mL - Black Tourmaline GenuineCan be as dark as night or as pale as a wispy fog. This intriguing PrimaTek color is made from a semi precious stone thought to bring luck, dispel negativity and promote clarity of purpose. In washes, especially on rough paper, it displays exciting granulation with delicate settling and a tracery of spidery runs. Intensely black in mass tone, it lets down to a beautiful, warm pearl grey.