Hardness is mostly.

I want to say Arkansas is natural stone - I made a couple years ago.
India are man made - Union Carbide (r) ?

Martin
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Life; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/


wrote:
When talking about abrasive stones what is the difference between
"Arkansas" and "India" stones?

Thanks in advance.