This vase was fired using the naked raku method.  Firstly, the vase burnished to a smooth surface when leatherhard.  Next, it's bisque fired.  It was then dipped in a mixture of clay and flint to coat it and then dipped in glaze (watery glass powder basically).  The inside was also coated in a blue/green glaze. 
 
It is then ready for the kiln.  Once it reaches a certain temperature, it's removed from the kiln and placed in a metal box with sawdust and covered, keeping it away from oxygen. 
 
Where there was no glaze/clay, the smoke from the sawdust was able to burn a beautiful light grey into the clay.  The clay/glaze mixture falls away (with a lot of scrubbing), leaving behind a beautiful white speckly appearance. 
 
The inside of this vase is particularly beautiful with a crackle blue/green glaze.  I really like this vase. 
 
Since raku vessels don't reach vitrification temperatures, they are not water-tight.  This vase, however, was treated with a sealant and should now be watertight. 
 
Handcrafted in Cornwall with fun.