Scottish green hone stones
I am testing a stone I cannot identify. It is not slate. I do not think it is novaculite. I do not think it is a Charnley Forest however it does behave similar to a very fine CF that I have. If it is a Lynn Idwal it is much finer than the one I currently own.
I raised a slurry for test. It is very white almost blue white slurry. Very fine. This stone is hard and would have been used with oil. I have final finished a stainless steel Wusthof for shave testing. The edge is typical of a SS edge finished on high grit CF. Fine even serrated tooth pattern at 100X magnification. I will shave test without stropping.
I wish it were possible to identify a Devonshire or Cutlers Green oil stone. This was obviously a special stone which is indicated by the furniture this stone was housed in. The box is marked C. MURRAY. Here is an article about C. Murray from Perth with a Scottish Pearl. Continue reading further down the page. The new monthly magazine - Google Books
And this about a Scottish amorphous Green stone porphyry that is interesting.
The Edinburgh encyclopaedia - Sir David Brewster - Google Books
If anyone has any other info on these green Scottish stones please respond.
Mike
With slurry
http://i.imgur.com/CzIgY.jpg
24 passes on oil w/ Wusthoff SS
http://i.imgur.com/1cro5.jpg
Box furniture two tone appears as mahogany & cherry
http://i.imgur.com/CCtNq.jpg
Stamp shown in outside lighting
http://i.imgur.com/vf7Nf.jpg