The Spyderco Golden Stone sharpening stone fine, 308F has a striking shape that looks a lot like a duck foot. This design makes the stone unique and practical.
When you place the stone vertically on a flat surface, the curve facing up, you are left with a 20-degree angle to sharpen knives. When you put the stone on its side you will have a 12.5-degree angle to sharpen scissors.
You can also use it as a sharpening stone. The front and back of the stone have a large surface. From knives to chisels, and other tools: with this stone you can sharpen many edges. The stone is made from aluminium oxide (synthetic sapphire). On the Mohs scale these stones have a hardness of 9.2. To compare, diamond had a hardness of 10.
You don't need water or oil to use this sharpener. The sharpening stone can safely be cleaned in the dishwasher or autoclave, but you can, also easily clean it with a little liquid abrasive.
In terms of grain size the Spyderco Golden Stone 308F is a 15 to 25 micron.
This stone comes with a leather storage case.