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Still, it's a diamond. As for the stones, the color differences and softness-porosity depending on the depth the stone was extracted from, (I can't say the same is true for coticule stones) there are...

Is it only me, or the Jnats in the Tokyo area like coticule stones? Many mines, many stratas, each with its unique name and usually different properties from mine to mine, strata to strata and stone...

Reading than on your left hand side appear more scratches, I should mention; it's a good idea to turn around regularly the surface of the stones, 180 degrees, and use evenly distributed, not too much...

The fact that your hone releases more slurry with nagura after a DMT is what I described above. No matter how harsh the surface is (or the particles of the surface, or loose particles, they follow...

The wear from an atoma 1200 will be about two microns, even less. By this rate, how long do you estimate your stone to last, every time you raise slurry? We are not talking about translucent Arkansas...

I know more about atoma diamond plates than DMTs, but from what I do know and have seen more than a few times, it's not a good idea to use a DMT or Eze-Lap fine grade plates for slurry making. Both...

The chemical composition is in fact known, it's a mineral, based on SiO2 as most of the naturals. As for the shape of the crystals, we know that too. What makes a stone soft or hard is its porosity....

That's true for all the stones. An inch stone thick (if not too soft) will last more than a few lifetimes for a barber, if they know how to use it. The same stone will last 4 months for a...

Once upon a time (like, until two years ago :p ) I was thinking the same way, and had 50 different types of stones with the most expensive at 100 euro. Then, I started selling them. I sold many, and...

I'm pretty sure, Greeks did not invent, discover or named the Jnats in the Kyoto area. In nothing else, we've had an Empire to run at that time :p
You don't have to buy a Nakayama. Ozuku, Shobu...

No, maruka stamps don't make the stones superior. They are not the Eschers of the Thuringians, they are just stamps on good stones, that drive quite high the price. But you can find a similar stone...