Thiswinsor and newton galeria black lava texture gel is a great way to add textured effects to your artwork it is a granular paste containing fine particles of black flint that allow the artist to achieve a heavier and more pronounced effect than can be achieved with mineral texture gelyou can use this gel alone for colourless results or mix with acrylic colour it can also be painted over to create textured effects it can be applied with either a brush or a knife250 mlgranular paste contain