BLOCKX watercolours are made from rare, light-resistant pigments that are very finely ground and coated in gum arabic and honey. On a quest for excellence, Jacques Blockx IV developed 72 shades of watercolour with the addition of honey to increase the resistance of the colours over time and lend them greater brilliance and luminosity. BLOCKX Watercolours are made using only lightfast pigments to ensure stability because watercolour is a naturally fragile medium. The most intense and brilliant pigments, which always can be diluted but never improved. Made by hand in Belgium. Set of 6 x 15ml tubes. Yellows set contains 314 Lemon Yellow, 212 Blockx Yellow, 313 Primary Yellow, 317 Indian Yellow, 216 Gamboge and 218 Permanent Orange.