No i dont have russian naturals ,only synthetics .Yes there are many thuringians in Russia ,left and beried ,unknoun.What a shame ,someones trash is others treasure. We have to asksomeone from the russian members ,how to get some Jasper-Iashma.But i suspect that the shipping from mother Russia will be very expensive .
Jasper is hard slow finisher ,black arc like or Cnat .Cretans are much more intresting for rasor honing ,from my humble experience with naturals. I am now very intrested in synthetics and i tell you they have amazing 800 1000 grit bevel setters. my only barber hone so far is russian carbocorund barber hone that is etalon for 8 k ,with diferent sluries on it produce very sharp and medium to softness edge.