A local gun shop has a Burris Euro Diamond NIB 3-12x56 with 30mm tube and illuminated reticle for $500. I know this scope was 100% US made and was their top of the line scope at the time.
Never had a Euro Diamond, but I still have a Burris Black Diamond that I bought about 20 years ago. Awesome scope, very durable, nice clean glass. Mine has the ballistic Plex reticle, it was my long ranger before turret dialers were popular and affordable.