Picked a stone up cheaply on Ebay, sold as a Charnley Forest, I didn't think it was but thought it looked interesting so I set a low snipe and got it for £5.50. Its about 6"X1.5" I received it today, and have lapped it. The true colour is greyish olive green and there are some rusty red marks but also a lot of dark flecks. The slurry while lapping was milky grey green. Wetted and in natural light
I've never used or owned a Charnley Forest but the closeup photo reminds me of a natural Japanese stone.
I would be very surprised if it was a J-Nat but thanks for the input, it seems a real mystery what this rock is bit the main thing is it produces a brilliant edge. Yesterday I honed an ebay buy on it using a king 1000/6000 to set the bevel and sharpen, then polished the bevel with about 150 laps on this and was rewarded with lovely smooth, sharp edge. Better than my Dragons Tongue, Chinese 12K or Coticule.
