> Are you referring to "Damascus steel"? AFAIK, that has never been
> duplicated, but perhaps its quality was overestimated..
Not only has it been duplicated, but there are people who can tell you where & when a particular sample was made, and which exact technique was used. It was based on a moderately-sophisticated steelmaking technique that professional metallurgists usually learn about in college, so anyone who is really knowledgeable in the field should be able to give you all the details you want.
Billy Brown, MCSE+I