It is called the “Dragon Tail Ink Slab” because the best material for making the slab comes from Dragon Tail Mountain in Hizhou ( Hizhou is in Jiangxi Province now).
The She Ink Slab is green and sparkling in colour, it has a fine grain and it is very hard. It blends the ink with water well. The She Ink Slab is very precious for three reasons: 1. It is made of rare and beautiful stones which are only found on the bottom of streams in remote mountains. 2. It is a laborious job to try and carve this kind of hard stone.