The Japanese traditionally used sharpening stones lubricated with water  (using oil on a waterstone reduces its effectiveness). They have been  doing this for many hundreds of years, and the first stones were  naturally occurring.
These softer Japanese stones have a few advantages over harder stones.  First, because they are softer they do not become glazed or loaded with  the material they are sharpening. New particles are constantly exposed  as you work with them and thus they continue to cut consistently.  Second, they can be lubricated effectively with water (rather than oil,  which can ruin the stone) so nothing but water is required. Finally,  because they are soft, the worn material and the water form a slurry  that in conjunction with the stone, sharpens and polishes the blade.

This is a dual stone, this means it has 2 different stones, a #1000 and a #3000 grip. 
Also included is a rubber non slippy waterstone holder. It is made in Japan.
The stone is 15cm long,  5cm wide and 2,4cm thick. (5.9" x 2" x 0.9")

I am also selling a smaller model of this stone in my ebay shop :




Don't forget to check my other items. Ask me about combined shipping.

If you want a tracking number with insurance, please contact me.

I have all items in stock and will usually sent the parcel the day of your payment or the next day. 
Shipping usually takes between 7 and 20 business days to most countries. 

Don't forget to order this ceramic knife guide for an easy sharpening :

If you also want to get this Nagura cleaning stone, 
please add $8 to the total or contact me.
(Also available separately in my shop)