Japanese natural Shiro Suita sharpening stone #1223
Size: 201-65-18mm thick
Weight: 2lb 4oz 1kg
Hardness: ★★★★☆ Mohs4
 
This Ozaki is very dense, and hard by most standards and comes with the tomonagura in the photos. I found that it excels with stainless steel kitchen or fishing/hunting type blades.
It is a very homogenous stone, with strands of iron oxides. This Ozaki does not sit perfectly flat on a table top but it will fit into most most end to end compression type stone holders. I will back up its quality with a money-back guarantee minus the return shipping. 
 
The top surface and all of my stones have been flattened, and the edges of the top surface have been beveled, This stone comes with an appropriately sized and tested tomo-nagura slurry stone. The missing corners is reflected in the price.